EP0118599B1 - Push-button switch - Google Patents

Push-button switch Download PDF

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Publication number
EP0118599B1
EP0118599B1 EP83111249A EP83111249A EP0118599B1 EP 0118599 B1 EP0118599 B1 EP 0118599B1 EP 83111249 A EP83111249 A EP 83111249A EP 83111249 A EP83111249 A EP 83111249A EP 0118599 B1 EP0118599 B1 EP 0118599B1
Authority
EP
European Patent Office
Prior art keywords
housing
slide
sliding key
switching slide
bearing
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
EP83111249A
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German (de)
French (fr)
Other versions
EP0118599A1 (en
Inventor
Karl-Heinz Bauer
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.)
Preh GmbH
Original Assignee
Preh GmbH
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
Priority claimed from DE19833303735 external-priority patent/DE3303735C2/en
Application filed by Preh GmbH filed Critical Preh GmbH
Priority to AT83111249T priority Critical patent/ATE19323T1/en
Publication of EP0118599A1 publication Critical patent/EP0118599A1/en
Application granted granted Critical
Publication of EP0118599B1 publication Critical patent/EP0118599B1/en
Expired legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
    • H01H13/562Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force making use of a heart shaped cam

Definitions

  • the invention is based on a push button switch according to the preamble of claim 1, as is known from DE-C-1 910 165.
  • Another switch is known from BE-A-508 615.
  • This consists of a housing, in the housing wall of which a slide switch is slidably mounted.
  • a compression spring is arranged in a hollow central part of the slide switch, which is supported at one end on the bottom of the hollow central part and at the other end on the contact element itself.
  • This contact element is pivotally mounted at one end in a notch in the housing wall.
  • the compression spring serves both as a spring mechanism and for generating the contact pressure. Furthermore, the compression spring presses the slide switch against the housing wall.
  • a key slide is arranged displaceably against the force of a return spring, through which a contact bridge arranged on a jump piece can be moved relative to fixed contact pieces.
  • a button is also formed on the key slide.
  • the movable jumping piece Connected to the key slide via a compression spring is the movable jumping piece, which has locking arms formed on both sides with locking lugs, which interact with locking grooves in the housing, and which can slide on the stepped end of the key slide.
  • the switch housing itself is closed by a lid.
  • a slide button which has a heart-shaped backdrop, in which a Z-shaped locking member is guided, is displaceable in the housing against the force of a return spring.
  • This locking member can consist of wire or have the shape of a pin.
  • One end of the locking member plunges into the heart-shaped backdrop, while the other end is fastened in the housing cover.
  • a leaf spring presses the associated end of the locking element into the setting.
  • the leaf spring is punched out of a metal band and has a notch on both sides.
  • a cut-out tongue is bent out at an angle of 45 degrees. The relatively long arm presses on the locking element.
  • a switch in whose housing a slide switch made of plastic can be moved.
  • Fixed counter contacts and connecting pieces are arranged in the housing.
  • contact elements which are pivotally mounted about the fixed connecting pieces and which can be jumped by operation of the slide switch.
  • the contact elements are designed as two-armed levers, the first arms interacting with the mating contacts, while the second arms engage in notches in the slide switch.
  • There is also a compression spring which serves as a spring mechanism and which is used to generate the contact pressure.
  • the compression spring forms the counter bearing to the first bearing, which is formed by the second arms engaging in the notches.
  • the compression spring is supported with one end at the bottom of a cavity of a pot-shaped middle part of the slide switch and with its other end in a recess in the opposite housing wall.
  • the object of the present invention is to provide a pushbutton switch according to the type mentioned in the first part of claims 1 so that, with a reduced number of individual parts, it has a space-saving, compact structure and is simple and inexpensive to produce. Furthermore, the push button switch should be suitable for simple assembly in printed circuits.
  • the push-button switch shown in FIG. 1 has an approximately cuboid housing 1 made of plastic with housing walls 3 and a housing base 2.
  • the stationary counter contacts 5 provided with solder connections protrude through slots in the upper housing wall.
  • the counter contacts can also be injected into the housing wall.
  • Approximately in the middle of the housing 1 are stationary in adapted grooves, also with external solder connections provided connectors 6 attached to which the contact elements 7 are pivotally mounted. With their shoulder surfaces, they lie in dovetail-shaped recesses in the connecting pieces 6.
  • the contact elements 7 are designed with two arms, the first arm 8 (in FIG. 1 the left arm) flying against the counter contacts 5 in the switched-on state shown.
  • the first arms 8 can be provided with precious metal contacts at the locations of the support.
  • the second arms 9 (the right arm in FIG. 1) of the pivotable contact elements engage in U-shaped or V-shaped notches 10 of a slide switch 4.
  • the slide switch 4 has as a projection a pot-like central part 14 in the form of a hollow truncated cone.
  • a helical compression spring 11 is supported with one end.
  • the contact elements 7 engaging in the notches 10 perform a pivoting movement in their bearing points on the connecting pieces, by means of which the contact rivets 26 are lifted off the counter contacts.
  • the slide switch 4 experiences a displacement on a circular arc, the radius of which corresponds to the length of the arm 9.
  • the front end of the helical compression spring 11 is carried along from the pot bottom of the middle part 14.
  • a plastic sliding tab 15 shown in FIG. 2 which has a molded actuating button 18 on its front end protruding from the housing.
  • the slide button is guided in the housing by means of two plain bearings.
  • the one slide bearing is formed in that the actuating button 18 is guided on a hollow extension 19 of the housing end wall in such a way that this extension protrudes into a recess 20 in the actuating button.
  • the projection 19 is hollow on the inside, so that the helical compression spring 11 passes through the opening 19 through an opening in the housing end wall and is supported with its second end on the bottom of the recess in the actuating button.
  • the spring 11 also serves as a return spring for the slide button.
  • the cover 24, which closes the housing, is molded onto the sliding key 15, which is expediently so large that the housing is closed in both locking positions.
  • housing partition piece 23 which extends partially into the interior of the housing so that it is located between the mating contacts 5.
  • the housing partition piece also partially protrudes from the housing wall. This housing partition is divided into two halves by an incision 22.
  • a latching tongue 21 is formed, which is arranged perpendicular to the sliding direction. With the help of this locking tongue 21, the sliding button 15 is now snapped into the incision 22. Since the incision is elongated, the locking tongue can slide along it. This connection thus represents the second slide bearing of the key slide.
  • the push button switch has two locking positions.
  • a so-called heart-shaped link 17 is recessed in the sliding button 15, in the guide groove of which a locking member 16 is guided.
  • the mode of operation is generally known, so that it is not discussed in more detail here.
  • the locking member itself is mounted transversely to the sliding direction of the sliding button in the housing partition. Its molded pin engages the backdrop. Laterally, the locking member has a molded pin 25 which protrudes from the housing wall 3 and which triggers z. B. allowed by a magnet.
  • a recess 27 is also provided in the sliding key, into which a pin 28 engages, which is integrally formed on the switching slide 4 and which causes the coupling between the sliding switch and the sliding key to be carried along.
  • the push button switch can be connected directly to the chassis using e.g. B. a screw.
  • the housing end wall 12 has a downwardly extending extension 29 which has an opening 30 in the center for receiving the screw.
  • the push button switch can also be inserted into a printed circuit 31, 32 or 33.
  • Three variants are shown one below the other in FIG.
  • the printed circuit 31 has an elongated recess 34 in two Corners inwardly directed projections 35.
  • the assembly is now carried out such that the push button switch is first inserted vertically from above into the recess and into the slots 36. Then the push button switch is moved slightly parallel to the printed circuit until it stops. As a result, the projections 35 pass between two cutouts 37 of the extension, so that detachment is prevented in this position.
  • the extension 29 of the housing end wall has a longitudinal slot 39 in the middle and lugs 40 projecting on both sides at the height of the opening 30, which lugs can be compressed when inserted into the elongated recess 41 of the printed circuit 33 and spring open again after insertion .
  • the recess is somewhat wider than the width of the extension 29, but not so wide that the push button switch can fall out again after insertion.

Abstract

1. A push button switch having a pot-shaped housing (1) which is open on one side, which comprises a housing base (2) and housing walls (3) and in which there may be moved a switching slide (4), in which there are arranged cooperating fixed contacts (5) and contact elements (7) which are pivoted on fixed terminal pieces (6), which are formed as double-armed levers and which through actuation of the switching slide (4) may be displaced suddenly, of which in each case the first arms (8) act together with the fixed cooperating contacts (5) and the second arms (9) are operatively connected with the switching slide (4) by means of notches (10) provided in the latter and thereby form a first bearing of the switching slide (4), having a coil pressure spring (11) which serves as a spring mechanism and to produce the contact pressure and which forms a second bearing for the switching slide (4) as it acts on the side of the switching slide (4) remote from the notches (10)-holding said slide at a distance from the front wall of the housing - and with its first end is supported on the base of a cavity (13) of a pot-shaped central portion (14) of the switching slide (4) which is arranged as a projection between the notches (10), having a sliding key (15) coupled with the switching slide (4), characterized in that the sliding key (15) has a stop device in which a stop member is guided in a heart-shaped connecting link of the sliding key (15), in that a first slide bearing is formed for the spring-loaded sliding key (15), which is provided with an actuating button, as the actuating button (18) is guided on a hollow attachment (19) which is pre-formed on the front wall (12) of the housing (1) and which projects into a recess (20) of the actuating button (18), in that the coil pressure spring (11) travels through an opening in the front wall (12) of the housing and the allow attachment (19) and is supported at its second end on the base of the recess (20) of the actuating button (18) and in that the second slide bearing of the sliding key (15) is formed by at least one pre-formed stop tongue (21) which extends crosswise in respect of the longitudinal direction of the sliding key and which is guided in a displaceable manner in an elongate recess (22) of a dividing wall piece (23) of the housing after snap engagement.

Description

Die Erfindung geht von einem Drucktastenschalter nach dem Oberbegriff des Anspruches 1 aus, wie er aus der DE-C-1 910 165 bekannt ist.The invention is based on a push button switch according to the preamble of claim 1, as is known from DE-C-1 910 165.

Aus der DE-U-19 13 691 sind bereits zweipolige Schalter bekannt, bei denen die beweglichen Kontaktelemente als Schaltschwingen mit seitlichen Ausnehmungen ausgebildet sind, in denen Schraubenfedern eingesetzt sind, die sich mit einem Ende in der Schaltschwinge und mit dem anderen Ende auf Zapfen des annähernd senkrecht zu den Schaltschwingen angeordneten Schiebers abstützen. Außerdem ist es bekannt (DE-U-19 28 070), bei einem Schalter den Schaltschieber auf einem schwenkbaren Kippglied zu lagern, welches drehbeweglich am Schaltergehäuse befestigt ist und mit einer Schneide in eine angepaßte Kerbe des Schiebers eingreift.From DE-U-19 13 691 two-pole switches are already known, in which the movable contact elements are designed as rocker arms with lateral recesses, in which coil springs are used, which have one end in the rocker arm and the other end on the pin of the Support the slide arranged approximately perpendicular to the rocker arms. In addition, it is known (DE-U-19 28 070) to mount the slide switch in a switch on a pivotable tilting member which is rotatably attached to the switch housing and engages with a cutting edge in an adapted notch of the slide.

Ein weiterer Schalter ist aus der BE-A-508 615 bekannt. Dieser besteht aus einem Gehäuse, in dessen Gehäusewand ein Schaltschieber verschiebbar gelagert ist. In einem hohlraumförmigen Mittelteil des Schaltschiebers ist eine Druckfeder angeordnet, die sich mit einem Ende am Boden des hohlraumförmigen Mittelteils und mit ihrem anderen Ende am Kontaktelement selbst abstützt. Dieses Kontaktelement ist an seinem einen Ende in einer Einkerbung der Gehäusewand schwenkbar gelagert. Auch hier dient die Druckfeder sowohl als Sprungwerk wie auch zur Erzeugung des Kontaktdruckes. Ferner drückt die Druckfeder den Schaltschieber an die Gehäusewand.Another switch is known from BE-A-508 615. This consists of a housing, in the housing wall of which a slide switch is slidably mounted. A compression spring is arranged in a hollow central part of the slide switch, which is supported at one end on the bottom of the hollow central part and at the other end on the contact element itself. This contact element is pivotally mounted at one end in a notch in the housing wall. Here, too, the compression spring serves both as a spring mechanism and for generating the contact pressure. Furthermore, the compression spring presses the slide switch against the housing wall.

Im Gehäuse eines aus der DE-B-28 39 108 bekannten Drucktastenschalters ist ein Tastenschieber gegen die Kraft einer Rückholfeder verschiebbar angeordnet, durch den eine an einem Sprungstück angeordnete Kontaktbrücke relativ zu ortsfesten Kontaktstücken bewegbar ist. Am Tastenschieber ist ein Tastenknopf mit angeformt. Mit dem Tastenschieber über eine Druckfeder verbunden ist das bewegliche Sprungstück, das beidseitig angeformte Rastarme mit Rastnasen besitzt, die mit Rastnuten des Gehäuses zusammenwirken, und das auf dem abgestuften Ende des Tastenschiebers gleiten kann. Das Schaltergehäuse selbst ist durch einen aufgesetzten Deckel abgeschlossen.In the housing of a push-button switch known from DE-B-28 39 108, a key slide is arranged displaceably against the force of a return spring, through which a contact bridge arranged on a jump piece can be moved relative to fixed contact pieces. A button is also formed on the key slide. Connected to the key slide via a compression spring is the movable jumping piece, which has locking arms formed on both sides with locking lugs, which interact with locking grooves in the housing, and which can slide on the stepped end of the key slide. The switch housing itself is closed by a lid.

Ein anderer Drucktastenschalter mit einem Gehäuse, das durch einen Deckel abschließbar ist, ist aus der DE-A-31 07 769 bekannt. Im Gehäuse gegen die Kraft einer Rückstellfeder verschiebbar ist eine Schiebertaste, die eine herzförmige Kulisse aufweist, in der ein Z-förmiges Rastglied geführt ist. Dieses Rastglied kann aus Draht bestehen oder die Form eines Stiftes aufweisen. Ein Ende des Rastgliedes taucht in die herzförmige Kulisse ein, während das andere Ende in dem Gehäusedeckel befestigt ist. Damit die Führung des Rastgliedes in der Kulisse gewährleistet ist, drückt eine Blattfeder das zugeordnete Ende des Rastgliedes in die Kulisse. Die Blattfeder ist aus einem Metallband ausgestanzt und sie besitzt beidseitig je eine Kerbe. Unter einem Winkel von 45 Grad ist eine freigeschnittene Zunge herausgebogen. Der relativ lange Arm drückt auf das Rastglied.Another push button switch with a housing that can be locked by a cover is known from DE-A-31 07 769. A slide button, which has a heart-shaped backdrop, in which a Z-shaped locking member is guided, is displaceable in the housing against the force of a return spring. This locking member can consist of wire or have the shape of a pin. One end of the locking member plunges into the heart-shaped backdrop, while the other end is fastened in the housing cover. To ensure that the locking element is guided in the setting, a leaf spring presses the associated end of the locking element into the setting. The leaf spring is punched out of a metal band and has a notch on both sides. A cut-out tongue is bent out at an angle of 45 degrees. The relatively long arm presses on the locking element.

In der DE-C-19 10 165 Schließlich ist ein Schalter beschrieben, in dessem Gehäuse ein Schaltschieber aus Kunststoff verschiebbar ist. Im Gehäuse sind ortsfeste Gegenkontakte und Anschlußstücke angeordnet. Ferner sind Kontaktelemente vorhanden, die um die ortsfesten Anschlußstücke schwenkbar gelagert sind und die durch Betätigung des Schaltschiebers sprungartig umlegbar sind. Die Kontaktelemente sind als zweiarmige Hebel ausgebildet, wobei die ersten Arme mit den Gegenkontakten zusammenwirken, während die zweiten Arme in Einkerbungen des Schaltschiebers eingreifen. Es ist ferner noch eine Druckfeder vorhanden, die als Sprungwerk und die zur Erzeugung des Kontaktdruckes dient. Die Druckfeder bildet das Gegenlager zu dem ersten Lager, das dadurch gebildet wird, daß die zweiten Arme in die Einkerbungen eingreifen. Die Druckfeder stützt sich mit ihrem einen Ende am Boden eines Hohlraumes eines topfförmigen Mittelteils des Schaltschiebers ab und mit ihrem anderen Ende in einer Ausnehmung der gegenüberliegenden Gehäusewand.In DE-C-19 10 165, finally, a switch is described, in whose housing a slide switch made of plastic can be moved. Fixed counter contacts and connecting pieces are arranged in the housing. Furthermore, there are contact elements which are pivotally mounted about the fixed connecting pieces and which can be jumped by operation of the slide switch. The contact elements are designed as two-armed levers, the first arms interacting with the mating contacts, while the second arms engage in notches in the slide switch. There is also a compression spring which serves as a spring mechanism and which is used to generate the contact pressure. The compression spring forms the counter bearing to the first bearing, which is formed by the second arms engaging in the notches. The compression spring is supported with one end at the bottom of a cavity of a pot-shaped middle part of the slide switch and with its other end in a recess in the opposite housing wall.

Aufgabe der vorliegenden Erfindung ist .es, einen Drucktastenschalter nach der im ersten Teil den Anspruchen 1 genannten Art so weiter zubildere, daß der bei einer verringerten Anzahl von Einzelteilen einen platzsparenden, gedrängten Aufbau aufweist und einfach und kostengünstig herstellbar ist. Ferner soll der Drucktastenschalter für eine einfache Bestückung in gedruckten Schaltungen geeignet sein.The object of the present invention is to provide a pushbutton switch according to the type mentioned in the first part of claims 1 so that, with a reduced number of individual parts, it has a space-saving, compact structure and is simple and inexpensive to produce. Furthermore, the push button switch should be suitable for simple assembly in printed circuits.

Diese Aufgabe wird erfindungsgemäß durch die im kennzeichnenden Teil des Patentanspruches 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention result from the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert.An embodiment of the invention is explained below with reference to the drawings.

Von den Figuren zeigt

  • Figur 1 eine perspektivische Draufsicht eines Drucktastenschalters mit einem Gehäuse ohne Deckel,
  • Figur 2 eine perspektivische Unteransicht eines Tastenschiebers,
  • Figur 3 eine perspektivische Ansicht des Drucktastenschalters mit drei verschiedenen Einbaumöglichkeiten.
From the figures shows
  • FIG. 1 shows a perspective top view of a push button switch with a housing without a cover,
  • FIG. 2 shows a perspective bottom view of a key slide,
  • Figure 3 is a perspective view of the push button switch with three different installation options.

Der in Figur 1 dargestellte Drucktastenschalter besitzt ein etwa quaderförmiges Gehäuse 1 aus Kunststoff mit Gehäusewänden 3 und einem Gehäuseboden 2. Durch Schlitze der oberen Gehäusewand ragen die mit Lötanschlüssen versehenen ortsfesten Gegenkontakte 5. Die Gegenkontakte können auch in die Gehäusewand mit eingespritzt sein. Etwa in der Mitte des Gehäuses 1 sind in angepaßten Nuten ortsfeste, ebenfalls mit äußeren Lötanschlüssen versehenen Anschlußstücke 6 angebracht au denen die Kontaktelemente 7 schwenkbar gelagert sind. Mit ihren Schulterflächen liegen sie in schwalbenschwanzförmigen Ausnehmungen der Anschlußstücke 6. Durch eine derartige mittige Lagerung sind die Kontaktelemente 7 zweiarmig ausgebildet, wobei der erste Arm 8 (in Figur 1 der linke Arm) im dargestellten eingeschalteten Zustand an den Gegenkontakten 5 anfliegt. An den Stellen der Auflage können die ersten Arme 8 mit Edelmetallkontakten versehen sein.The push-button switch shown in FIG. 1 has an approximately cuboid housing 1 made of plastic with housing walls 3 and a housing base 2. The stationary counter contacts 5 provided with solder connections protrude through slots in the upper housing wall. The counter contacts can also be injected into the housing wall. Approximately in the middle of the housing 1 are stationary in adapted grooves, also with external solder connections provided connectors 6 attached to which the contact elements 7 are pivotally mounted. With their shoulder surfaces, they lie in dovetail-shaped recesses in the connecting pieces 6. By means of such a central mounting, the contact elements 7 are designed with two arms, the first arm 8 (in FIG. 1 the left arm) flying against the counter contacts 5 in the switched-on state shown. The first arms 8 can be provided with precious metal contacts at the locations of the support.

Die zweiten Arme 9 (in Figur 1 der rechte Arm) der schwenkbaren Kontaktelemente greifen in U-oder V-förmige Einkerbungen 10 eines Schaltschiebers 4 ein. In der Mitte zwischen diesen Einkerbungen besitzt der Schaltschieber 4 als Vorsprung ein topfartiges Mittelteil 14 in Form eines Hohlkegelstumpfes. Am Boden dieses Mittelteils stützt sich eine Schraubendruckfeder 11 mit ihrem einen Ende ab.The second arms 9 (the right arm in FIG. 1) of the pivotable contact elements engage in U-shaped or V-shaped notches 10 of a slide switch 4. In the middle between these notches, the slide switch 4 has as a projection a pot-like central part 14 in the form of a hollow truncated cone. At the bottom of this central part, a helical compression spring 11 is supported with one end.

In der in Figur 1 dargestellten Einschaltstellung übt das zum Betrachter zugeneigte vordere Ende der Schraubendruckfeder 11 eine Kraft auf den Schaltschieber aus, deren zum Schaltschieber senkrechte Komponente die Schulterflächen der Kontaktelemente 7 an die Anschlußstücke 6 preßt und damit den notwendigen Kontaktdruck an diesen Berührungsstellen der leitenden Teile erzeugt. Die in Richtung der Längsachse des Schaltschiebers liegende Komponente wird durch die doppelarmige Hebelwirkung der Kontaktelemente auf die Kontaktnieten 26 übertragen, die nun ihrerseits mit entsprechendem Kontaktdruck auf den Gegenkontakten 5 aufliegen.In the switch-on position shown in FIG. 1, the front end of the helical compression spring 11, which is inclined towards the viewer, exerts a force on the slide switch, whose component, which is perpendicular to the slide switch, presses the shoulder surfaces of the contact elements 7 against the connecting pieces 6 and thus the necessary contact pressure at these contact points of the conductive parts generated. The component lying in the direction of the longitudinal axis of the slide switch is transferred to the contact rivets 26 by the double-armed lever action of the contact elements, which in turn now rest on the counter contacts 5 with corresponding contact pressure.

Bei Änderung des Schaltzustandes führen die in die Einkerbungen 10 eingreifenden Kontaktelemente 7 eine Schwenkbewegung in ihren Lagerstellen an den Anschlußstücken aus, durch welche die Kontaktnieten 26 von den Gegenkontakten abgehoben werden. Gleichzeitig erfährt dabei der Schaltschieber 4 eine Verschiebung auf einem Kreisbogen, dessen Radius der Länge des Armes 9 entspricht. Dabei wird das vordere Ende der Schraubendruckfeder 11 vom Topfboden des Mittelteils 14 mitgeführt. Beim Öberschreiten der Totpunktlage kehrt sich die Richtung der in der Längsachse des Schaltschiebers wirkende Kraftkomponente um, so daß nunmehr eine durch die Schraubendruckfeder beschleunigte sprungartige Weiterbewegung des Schaltschiebers in der gleichen Richtung bis zur Grenzlage der Ausschaltstellung erfolgt. Der gleiche Vorgang findet in umgekehrter Richtung beim Einschalten statt.When the switching state changes, the contact elements 7 engaging in the notches 10 perform a pivoting movement in their bearing points on the connecting pieces, by means of which the contact rivets 26 are lifted off the counter contacts. At the same time, the slide switch 4 experiences a displacement on a circular arc, the radius of which corresponds to the length of the arm 9. The front end of the helical compression spring 11 is carried along from the pot bottom of the middle part 14. When the dead center position is exceeded, the direction of the force component acting in the longitudinal axis of the slide switch is reversed, so that now a sudden, further movement of the slide valve accelerated by the helical compression spring takes place in the same direction up to the limit position of the switch-off position. The same process takes place in the opposite direction when switching on.

Im Gehäuse verschiebbar und mit dem Schaltschieber 4 gekuppelt ist eine in Figur 2 dargestellte Schiebetawe 15 aus Kunststoff, der an seinem vorderen, aus dem Gehäuse herausragenden Ende einen angeformten Betätigungsknopf 18 aufweist. Die Führung der Schiebetaste im Gehäuse erfolgt mittels zweier Gleitlager. Das eine Gleitlager wird dadurch gebildet, daß der Betätigungsknopf 18 auf einem hohlen Ansatz 19 der Gehäusestirnwand geführt ist derart, daß dieser Ansatz in eine Ausnehmung 20 im Betätigungsknopf ragt. Der Ansatz 19 ist innen hohl, so daß die Schraubendruckfeder 11 durch eine Öffnung in der Gehäusestirnwand hindurch den Ansatz 19 durchsetzt und sich mit ihrem Zweiten Ende am Boden der Ausnehmung im Betätigungsknopf abstützt. Die Feder 11 dient neben der Erzeugung des Kontaktdruckes gleichzeitig auch als Rückholfeder für die Schiebetaste.Slidable in the housing and coupled to the slide switch 4 is a plastic sliding tab 15 shown in FIG. 2, which has a molded actuating button 18 on its front end protruding from the housing. The slide button is guided in the housing by means of two plain bearings. The one slide bearing is formed in that the actuating button 18 is guided on a hollow extension 19 of the housing end wall in such a way that this extension protrudes into a recess 20 in the actuating button. The projection 19 is hollow on the inside, so that the helical compression spring 11 passes through the opening 19 through an opening in the housing end wall and is supported with its second end on the bottom of the recess in the actuating button. In addition to generating the contact pressure, the spring 11 also serves as a return spring for the slide button.

An die Schiebetaste 15 ist der das Gehäuse abschließende Deckel 24 angeformt, der zweckmäßigerweise so groß ist, daß in beiden Raststellungen das Gehäuse verschlossen ist.The cover 24, which closes the housing, is molded onto the sliding key 15, which is expediently so large that the housing is closed in both locking positions.

An der der Gehäusestirnwand 12 gegenüberliegenden Gehäusewand befindet sich ein Gehäusetrennwandstück 23, das sich teilweise in das Gehäuseinnere erstreckt und zwar so, daß es sich zwischen den Gegenkontakten 5 befindet. Teilweise ragt das Gehäusetrennwandstück auch aus der Gehäusewand heraus. Dieses Gehäusetrennwandstück wird durch einen Einschnitt 22 in zwei Hälften geteilt.On the housing wall opposite the housing end wall 12 there is a housing partition piece 23 which extends partially into the interior of the housing so that it is located between the mating contacts 5. The housing partition piece also partially protrudes from the housing wall. This housing partition is divided into two halves by an incision 22.

An dem dem Betätigungsknopf gegenüberliegenden Ende der Schiebetaste 15 ist -wie aus Figur 2 zu entnehmen ist- eine Rastzunge 21 angeformt, die senkrecht zur Schieberichtung angeordnet ist. Mit Hilfe dieser Rastzunge 21 wird nun die Schiebetaste 15 in den Einschnitt 22 eingeschnappt. Da der Einschnitt länglich ist, kann die Rastzunge in ihm entlanggleiten. Diese Verbindung stellt somit das zweite Gleitlager des Tastenschiebers dar.At the end of the sliding button 15 opposite the actuating button, as can be seen from FIG. 2, a latching tongue 21 is formed, which is arranged perpendicular to the sliding direction. With the help of this locking tongue 21, the sliding button 15 is now snapped into the incision 22. Since the incision is elongated, the locking tongue can slide along it. This connection thus represents the second slide bearing of the key slide.

Der Drucktastenschalter besitzt zwei Raststellungen. Hierfür ist in der Schiebetaste 15 eine sogenannte herzförmig ausgestaltete Kulisse 17 ausgespart, in deren Führungsnut ein Rastglied 16 geführt ist. Die Wirkungsweise ist allgemein bekannt, so daß hier nicht näher darauf eingegangen wird. Das Rastglied selbst ist quer zur Schieberichtung der Schiebetaste in dem Gehäusetrennwandstück verschiebbar gelagert. Sein angeformter Zapfen greift in die Kulisse ein. Seitlich besitzt das Rastglied noch einen angeformten Stift 25, der aus der Gehäusewand 3 herausragt und der ein Auslösen z. B. durch einen Magneten gestattet.The push button switch has two locking positions. For this purpose, a so-called heart-shaped link 17 is recessed in the sliding button 15, in the guide groove of which a locking member 16 is guided. The mode of operation is generally known, so that it is not discussed in more detail here. The locking member itself is mounted transversely to the sliding direction of the sliding button in the housing partition. Its molded pin engages the backdrop. Laterally, the locking member has a molded pin 25 which protrudes from the housing wall 3 and which triggers z. B. allowed by a magnet.

Neben der herzförmigen Kulisse ist in der Schiebetaste noch eine Aussparung 27 vorgesehen, in die ein Zapfen 28 eingreift, der an den Schaltschieber 4 angeformt ist und der eine Mitnahme bewirkend die Kupplung zwischen Schaltschieber und Schiebetaste darstellt.In addition to the heart-shaped backdrop, a recess 27 is also provided in the sliding key, into which a pin 28 engages, which is integrally formed on the switching slide 4 and which causes the coupling between the sliding switch and the sliding key to be carried along.

Für den Drucktastenschalter sind verschiedene Einbaumöglichkeiten vorgesehen. Eine Auswahl hiervon ist in Figur 3 dargestellt. Zunächst kann der Drucktastenschalter direkt an dem Chassis mittels z. B. einer Schraube befestigt werden. Die Gehäusestirnwand 12 besitzt hierzu einen nach unten sich erstreckenden Fortsatz 29, der mittig einen Durchbruch 30 zur Aufnahme der Schraube aufweist. Der Drucktastenschalter kann auch in eine gedruckte Schaltung 31, 32 oder 33 eingesetzt werden. In Figur 3 sind drei Varianten untereinander dargestellt. Die gedruckte Schaltung 31 besitzt eine längliche Aussparung 34 mit in zwei Ecken nach innen gerichteten Vorsprüngen 35. Ferner sind noch Schlitze 36 vorhanden, durch die die Gegenkontakte und Anschlußstücke gesteckt werden können. Die Montage erfolgt nun derart, daß der Drucktastenschalter zunächst senkrecht von oben in die Aussparung und in die Schlitze 36 gesteckt wird. Dann wird der Drucktastenschalter geringfügig parallel zur gedruckten Schaltung bis zum Anschlag verschoben. Dadurch gelangen die Vorsprünge 35 zwischen zwei Ausschnitte 37 des Fortsatzes, so daß ein Loslösen in dieser Stellung verhindert wird.Various installation options are provided for the push button switch. A selection of these is shown in FIG. 3. First, the push button switch can be connected directly to the chassis using e.g. B. a screw. For this purpose, the housing end wall 12 has a downwardly extending extension 29 which has an opening 30 in the center for receiving the screw. The push button switch can also be inserted into a printed circuit 31, 32 or 33. Three variants are shown one below the other in FIG. The printed circuit 31 has an elongated recess 34 in two Corners inwardly directed projections 35. There are also slots 36 through which the mating contacts and connecting pieces can be inserted. The assembly is now carried out such that the push button switch is first inserted vertically from above into the recess and into the slots 36. Then the push button switch is moved slightly parallel to the printed circuit until it stops. As a result, the projections 35 pass between two cutouts 37 of the extension, so that detachment is prevented in this position.

Während sich der Drucktastenschalter in der gedruckten Schaltung 31 innerhalb der Platte befindet, ist in der in der Figur 3 darunter dargestellten gedruckten Schaltung 32 eine Befestigung am Rand vorgesehen. Auch hier sind eine längliche, allerdings auf einer Seite offene Auspparung und verschiedene Schlitze 38 vorhanden. Das Einsetzen erfolgt wie in dem ersten Beispiel.While the push button switch in the printed circuit 31 is located inside the plate, an attachment at the edge is provided in the printed circuit 32 shown below in FIG. 3. Here too there is an elongated, but open on one side and various slots 38. The insertion takes place as in the first example.

Will man den Drucktastenschalter nur von oben in die gedruckte Schaltung 33 einsetzen, so kann man an dem Gehäuse Federzungen vorsehen. Es wäre eine, in Figur 3 nicht dargestellte Lösung denkbar, bei der am Gehäuseboden in den vier Ecken je eine Schnappnase angeformt ist. Bei der in Figur 3 dargestellten Lösung besitzt der Fortsatz 29 der Gehäusestirnwand mittig einen Längsschlitz 39 und in der Höhe des Durchbruches 30 beidseitig vorstehende Nasen 40, die beim Einführen in die längliche Aussparung 41 der gedruckten Schaltung 33 zusammengedrückt werden können und nach dem Einsetzen wieder auffedern. Die Aussparung ist dabei etwas breiter als die Breite des Fortsatzes 29, jedoch nicht so breit, daß der Drucktastenschalter nach dem Einsetzen wieder herausfallen kann.

Figure imgb0001
Figure imgb0002
If you only want to insert the push button switch from above into the printed circuit 33, you can provide spring tongues on the housing. A solution, not shown in FIG. 3, would be conceivable, in which a snap nose is formed on the bottom of the housing in the four corners. In the solution shown in FIG. 3, the extension 29 of the housing end wall has a longitudinal slot 39 in the middle and lugs 40 projecting on both sides at the height of the opening 30, which lugs can be compressed when inserted into the elongated recess 41 of the printed circuit 33 and spring open again after insertion . The recess is somewhat wider than the width of the extension 29, but not so wide that the push button switch can fall out again after insertion.
Figure imgb0001
Figure imgb0002

Claims (5)

1. A push button switch having a pot-shaped housing (1) which is open on one side, which comprises a housing base (2) and housing walls (3) and in which there may be moved a switching slide (4), in which there are arranged cooperating fixed contacts (5) and contact elements (7) which are pivoted on fixed terminal pieces (6), which are formed as double-armed levers and which through actuation of the switching slide (4) may be displaced suddenly, of which in each case the first arms (8) act together with the fixed cooperating contacts (5) and the second arms (9) are operatively connected with the switching slide (4) by means of notches (10) provided in the latter and thereby form a first bearing of the switching slide (4), having a coil pressure spring (11) which serves as a spring mechanism and to produce the contact pressure and which forms a second bearing for the switching slide (4) as it acts on the side of the switching slide (4) remote from the notches (10) - holding said slide at a distance from the front wall of the housing - and with its first end is supported on the base of a cavity (13) of a pot-shaped central portion (14) of the switching slide (4) which is arranged as a projection between the notches (10), having a sliding key (15) coupled with the switching slide (4), characterised in that the sliding key (15) has a stop device in which a stop member is guided in a heart-shaped connecting link of the sliding key (15), in that a first slide bearing is formed for the spring-loaded sliding key (15), which is provided with an actuating button, as the actuating button (18) is guided on a hollow attachment (19) which is pre-formed on the front wall (12) of the housing (1) and which projects into a recess (20) of the actuating button (18), in that the coil pressure spring (11) travels through an opening in the front wall (12) of the housing and the hollow attachment (19) and is supported at its second end on the base of the recess (20) of the actuating button (18) and in that the second slide bearing of the sliding key (15) is formed by at least one pre-formed stop tongue (21) which extends crosswise in respect of the longitudinal direction of the sliding key and which is guided in a displaceable manner in an elongate recess (22) of a dividing wall piece (23) of the housing after snap engagement.
2. Push button switch according to claim 1, characterised in that the dividing wall piece (23) of the housing is located on the housing wall opposite the front wall (12) of the housing and extends partly into the interior of the housing, between the fixed cooperating contacts (5).
3. Push button switch according to claim 1, characterised in that a lid (24), which closes the housing (1), is pre-formed on the sliding key (15).
4. Push button switch according to claim 1, characterised in that the stop member (16) is mounted in a displaceable manner at the end of the dividing wall piece (23) of the housing on the inside of the housing crosswise in respect of the sliding direction of the sliding key (15).
5. Push button switch according to claim 4, characterised in that the stop member (16) has a pin (25) which projects laterally out of the wall (3) of the housing.
EP83111249A 1983-02-04 1983-11-11 Push-button switch Expired EP0118599B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111249T ATE19323T1 (en) 1983-02-04 1983-11-11 PUSH BUTTON SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3303735 1983-02-04
DE19833303735 DE3303735C2 (en) 1982-12-18 1983-02-04 Push button switch

Publications (2)

Publication Number Publication Date
EP0118599A1 EP0118599A1 (en) 1984-09-19
EP0118599B1 true EP0118599B1 (en) 1986-04-16

Family

ID=6190001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111249A Expired EP0118599B1 (en) 1983-02-04 1983-11-11 Push-button switch

Country Status (3)

Country Link
EP (1) EP0118599B1 (en)
JP (1) JPS59143219A (en)
AT (1) ATE19323T1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1665832C3 (en) * 1966-12-21 1974-01-17 Standard Elektrik Lorenz Ag, 8500 Nuernberg Single or multi-pole slide switch for two switch positions, especially power switch
DE1285593B (en) * 1967-05-05 1968-12-19 Schadow Rudolf Electric slide switch with snap-on contact swivel arm
DE1910165C3 (en) * 1969-02-28 1980-02-28 Preh, Elektrofeinmechanische Werke, Jakob Preh, Nachf. Gmbh & Co, 8740 Bad Neustadt Two-pole slide switch
DE3107769A1 (en) * 1980-03-05 1982-01-07 Alps Electric Co., Ltd., Tokyo Push-button switch

Also Published As

Publication number Publication date
ATE19323T1 (en) 1986-05-15
EP0118599A1 (en) 1984-09-19
JPS59143219A (en) 1984-08-16

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