EP0538199B1 - Electrical push botton switch - Google Patents
Electrical push botton switch Download PDFInfo
- Publication number
- EP0538199B1 EP0538199B1 EP92810783A EP92810783A EP0538199B1 EP 0538199 B1 EP0538199 B1 EP 0538199B1 EP 92810783 A EP92810783 A EP 92810783A EP 92810783 A EP92810783 A EP 92810783A EP 0538199 B1 EP0538199 B1 EP 0538199B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- push
- circuit board
- printed circuit
- snap disc
- cap
- 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 - Lifetime
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Classifications
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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
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/7006—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard comprising a separate movable contact element for each switch site, all other elements being integrated in layers
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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
- H01H13/023—Light-emitting indicators
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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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2205/00—Movable contacts
- H01H2205/016—Separate bridge contact
- H01H2205/024—Means to facilitate positioning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/064—Limitation of actuating pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2227/00—Dimensions; Characteristics
- H01H2227/026—Separate dome contact
Definitions
- the present invention relates to an electrical pushbutton switch which is arranged on a printed circuit board, with electrically conductive supply fields and contact fields attached to the printed circuit board, and with an electrically conductive snap disk resting on the supply fields of the printed circuit board, which, when actuated, between the supply fields on the printed circuit board and makes or breaks a bridging contact in the contact fields on the printed circuit board, a snap and centering cap resting on the snap disk, which is held between the snap disk and a resilient covering foil sealingly covering a front plate and the tactile and centering cap, and wherein the button and centering cap are two areas spanned from each other, namely an actuation area with which the probe and centering cap rests on the snap disk at its actuation point, and a support region with which the probe and centering cap e leans against the circuit board when pressing down.
- Such push buttons are known from EP-A 0 347 375.
- the invention is therefore based on the object of creating a compact and flat, insensitive, universally usable and, in particular, quick and easy-to-install push-button switch of the type mentioned at the outset.
- the snap disk is arranged non-positively or positively within positioning pins on the feeler and centering cap, which positioning pins also engage in corresponding bores in the printed circuit board in a slidable manner.
- each positioning pin of the push-button and centering cap has an undercut on which the snap disk is supported when the push-button switch is not actuated.
- the additional effect of self-cleaning of the contacts can be achieved, since these are repositioned each time the snap disk is actuated and subsequently snapped back.
- a rotationally symmetrical pushbutton switch is designated 1 and lies directly on a flat printed circuit board 2.
- the push button switch 1 there is an electrically conductive snap disk 3, which rests on the surface of the printed circuit board 2 with three contact feet 3a shaped as indentations.
- the snap disk 3 is made of thin sheet metal by stamping and stamping and is provided with a thin gold coating for better contact.
- the snap disk 3 has an embossed contact nipple 3b with a contact denoted by 5.
- Circular contact surfaces 6 are arranged on the printed circuit board 2 below the contact feet 3a and the contact lug 3b.
- a known front plate 7 with a punched-out portion 8 is located on the circuit board, in which the snap disk 3 is inserted.
- the snap disk 3 there is a feeler and centering cap 11 with its force introduction ring 11a; it has a slightly curved top 22, cf. Fig. 3.
- the feeler and centering cap 11 is held between the snap disc 3 and a correspondingly biased cover sheet 12. This covers both the front plate 7 and the, for example, multiple additional push-button and centering caps 11 which are present several times over the entire surface and are dustproof and watertight.
- Known elastic decorative films have proven themselves as cover film 12. The prerequisite for this is that they are dimensioned in such a way that they allow a certain deflection in the region of the punching 8 in the front plate 7, which is sufficient for actuating the pushbutton switch 1.
- the height of the curvature of the upper side 22 of the feeler and centering cap 11 is based on the size of the spring travel of the snap disk 3 in order to achieve a clear switching feeling, it being particularly advantageous if the height of the curvature corresponds to less than half the spring travel.
- the force introduction ring 11a on the underside of the one-piece feeler and centering cap 11 lies concentrically on the snap disk 3 and switches it optimally. It also spans two existing areas, each with different functions.
- the area of the snap disk 3 located above the contact point 5, with its central contact projection 3b, is designated in FIG. 1 as the actuating area 13.
- the actuation area 13, formed by the force introduction ring 11a, ensures an optimal force distribution on the surface of the snap disk 3 and thus ensures a long service life of the pushbutton switch 1.
- the actuation area 13 and the support area 14 are spanned by the bottom 17 of the sensing and centering cap 11.
- the bottom 17 distributes the initiated actuation forces proportionally into the support region 14 and the actuation region 13.
- the snap disk 3 is therefore only acted upon by the corresponding, limited force component which is applied to the actuation region 13 of the push-button and centering cap 11 and which there, as provided , at the contact point 5 of the snap disk 3 takes effect.
- a preferably spherical snap disk 3 is used, cf. Fig. 2.
- Three positioning pins 23 with bevels 16 are formed on the push-button and centering cap 11 in a support area 14, offset by 120 ° to each other.
- the pins 23 have an undercut 24 lying in the unactuated state of the pushbutton switch 1 in the plane of the upper side of the printed circuit board 2, and dip into an associated bore 25 in the printed circuit board.
- the arched contact feet 3a of the snap disk 3 lie in the unactuated state of the pushbutton switch 1 on the one hand on the undercuts 24 of the positioning pins 23 and other on the top of the circuit board 2.
- FIG. 2 shows, with the cover film 12 removed, details of the feeler and centering cap 11.
- the configuration of the undercuts 24 with their supports 11 b for the snap disk 3 can be seen.
- the force introduction ring 11a is not shown here.
- the key switch 1 according to FIG. 3 is constructed in an analogous manner to that described above.
- the snap disk 3 here has a circular, wavy shape and is switched by a central push button 15 in the sensing and centering cap 11.
- a light source 18 is arranged at the lower end of the bore 25, which serves to illuminate the probe cap, which is transparent here.
- FIG. 4 shows a differently shaped snap disk 3, which is basically used for push-button switches according to FIG. 1 executed type can be used, with the snap disk 3 being associated with a push-button and centering cap, not shown, with loosely fitting positioning pins 23 of different numbers.
- the snap disk according to FIG. 4 belongs here three positioning pins 23.
- the snap disk 3 according to FIG. 4 has arcuate edges 3 '.
- the front plate and the printed circuit board can be screwed together and / or joined together in any desired manner.
- the subject matter of the invention can be completely adapted to the operating conditions with regard to the installation and / or the maintenance instructions, since it is constructed in a modular and solderless manner.
Landscapes
- Push-Button Switches (AREA)
- Switches With Compound Operations (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen elektrischen Tastschalter, der auf einer Leiterplatte angeordnet ist, mit auf der Leiterplatte angebrachten elektrisch leitenden Zuleitungsfeldern und Kontaktfeldern, sowie mit einer auf den Zuleitungsfeldern der Leiterplatte aufliegenden elektrisch leitenden Schnappscheibe, die in betätigtem Zustand zwischen den Zuleitungsfeldern auf der Leiterplatte und den Kontaktfeldern auf der Leiterplatte einen Überbrückungskontakt herstellt oder unterbricht, wobei auf der Schnappscheibe eine Tast- und Zentrierkappe aufliegt, die zwischen der Schnappscheibe und einer nachgiebigen, eine Frontplatte und die Tast- und Zentrierkappe abdichtend überdeckenden Abdeckfolie gehalten ist und wobei dieTast- und Zentrierkappe zwei voneinander beabstandete Bereiche überspannt und zwar einen Betätigungsbereich, mit dem die Tast- und Zentrierkappe auf der Schnappscheibe an ihrem Betätigungspunkt aufliegt, und einem Stützbereich, mit dem die Tast- und Zentrierkappe sich beim Niederdrücken zur Leiterplatte hin abstützt.The present invention relates to an electrical pushbutton switch which is arranged on a printed circuit board, with electrically conductive supply fields and contact fields attached to the printed circuit board, and with an electrically conductive snap disk resting on the supply fields of the printed circuit board, which, when actuated, between the supply fields on the printed circuit board and makes or breaks a bridging contact in the contact fields on the printed circuit board, a snap and centering cap resting on the snap disk, which is held between the snap disk and a resilient covering foil sealingly covering a front plate and the tactile and centering cap, and wherein the button and centering cap are two areas spanned from each other, namely an actuation area with which the probe and centering cap rests on the snap disk at its actuation point, and a support region with which the probe and centering cap e leans against the circuit board when pressing down.
Solche Tastschalter sind aus der EP-A 0 347 375 bekannt.Such push buttons are known from EP-A 0 347 375.
Nachteilig bei solchen Anordnungen ist jedoch der hohe Montageaufwand, der für das Aufbringen von Tast - und Zentrierkappe und Schnappscheibe auf der Leiterplatte erforderlich ist.A disadvantage of such arrangements, however, is the high assembly effort required for the application of the tactile and centering cap and snap disk on the printed circuit board.
Der Erfindung liegt daher die Aufgabe zugrunde, einen kompakten und flachen, unempfindlichen, universell einsetzbaren und insbesondere schnell und einfach zu montierenden Tastschalter der eingangs genannten Art zu schaffen.The invention is therefore based on the object of creating a compact and flat, insensitive, universally usable and, in particular, quick and easy-to-install push-button switch of the type mentioned at the outset.
Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Schnappscheibe kraft- oder formschlüssig innerhalb von Positionierungsstiften an der Tast- und Zentrierkappe angeordnet ist, welche Positionierungsstifte zudem in entsprechende Bohrungen der Leiterplatte gleitbeweglich eingreifen.This object is achieved according to the invention in that the snap disk is arranged non-positively or positively within positioning pins on the feeler and centering cap, which positioning pins also engage in corresponding bores in the printed circuit board in a slidable manner.
Durch diese Massnahmen ergibt sich die Möglichkeit einer vormontierbaren Baueinheit aus Tast- und Zentrierkappe und Schnappscheibe, was deren Montage auf der Leiterplatte enorm vereinfacht und so zu einer erheblichen Kostensenkung führt.These measures result in the possibility of a preassembled unit consisting of a probe and centering cap and a snap disk, which enormously simplifies their assembly on the printed circuit board and thus leads to a considerable reduction in costs.
Zur Erzielung einer zuverlässigen Positionierung der Schnappscheibe innerhalb der Tast- und Zentrierkappe resp. Positionierungsstifte weist nach einer vorteilhaften Ausgestaltung der Erfindung jeder Positionierungsstift der Tast- und Zentrierkappe eine Hinterschneidung auf, auf der sich die Schnappscheibe in unbetätigtem Zustand des Tastschalters abstützt.To achieve a reliable positioning of the snap disc within the feeler and centering cap, respectively. According to an advantageous embodiment of the invention, each positioning pin of the push-button and centering cap has an undercut on which the snap disk is supported when the push-button switch is not actuated.
Hierbei lässt sich durch eine zweckmassige Abstimmung des Spiels zwischen der Schnappscheibe und den Positionierungsstiften der zusätzliche Effekt einer Selbstreinigung der Kontakte erzielen, da diese bei jeder Betätigung und dem anschliessend resultierenden Zurückschnappen der Schnappscheibe wieder neu positioniert werden.Here, by appropriately coordinating the play between the snap disk and the positioning pins, the additional effect of self-cleaning of the contacts can be achieved, since these are repositioned each time the snap disk is actuated and subsequently snapped back.
Es ist aber auch möglich, dass die Schnappscheibe peripher an den Positionierungsstiften anliegt.However, it is also possible for the snap disk to rest peripherally on the positioning pins.
Nachfolgend sind anhand von Zeichnungen Ausführungsbeispiele der Erfindung näher beschrieben. Es zeigen:
- Fig. 1 eine Schnittdarstellung durch eine bevorzugte Ausführungsform eines Tastschalters;
- Fig. 2 eine Ansicht des Tastschalters gemäss Fig. 1,von oben dargestellt ohne Abdeckfolie;
- Fig. 3 einen gegenüber Fig. 1 leicht modifizierten Tastschalter im betätigten Zustand, mit einer zusätzlichen Lichtquelle,
und - Fig. 4 eine unterschiedliche Schnappscheibenform.
- Figure 1 is a sectional view through a preferred embodiment of a key switch.
- FIG. 2 is a view of the push button switch according to FIG. 1, shown from above without a cover film;
- 3 a slightly modified push-button switch compared to FIG. 1 in the actuated state, with an additional light source,
and - Fig. 4 shows a different snap disc shape.
In sämtlichen Figuren sind gleiche Bezugszeichen für die gleichen Funktionselemente verwendet.The same reference numerals are used for the same functional elements in all the figures.
Gemäss Fig. 1 ist ein rotationssymetrischer Tastschalter mit 1 bezeichnet und liegt direkt auf einer flachen Leiterplatte 2 auf. Im Tastschalter 1 befindet sich eine elektrisch leitende Schnappscheibe 3, die mit drei als Einbuchtungen geformten Kontaktfüssen 3a auf der Oberfläche der Leiterplatte 2 aufliegt. Die Schnappscheibe 3 ist aus dünnem Blech durch Prägen und Stanzen hergestellt und zur besseren Kontaktierung mit einem dünnen Überzug aus Gold versehen. In ihrer Mitte besitzt die Schnappscheibe 3 eine eingeprägte Kontaktwarze 3b mit einem mit 5 bezeichneten Kontakt. Unterhalb der Kontaktfüsse 3a und der Kontaktwarze 3b sind kreisförmige Kontaktflächen 6 auf der Leiterplatte 2 angeordnet. Durch elektrische Zuleitungsfelder wird in an sich bekannter Weise ein elektrisches Potential zu Kontaktflächen 6 geführt, so dass über die auf den Kontaktflächen 6 aufliegenden Kontaktfüssen 3a auch die Schnappscheibe 3 an das Potential angeschlossen ist. Im betätigten niedergedrückten Zustand der Schnappscheibe 3 stellt diese mit ihrer auf der mittleren Kontaktfläche 6 aufliegenden Kontaktwarze 3b einen Uberbrückungskontakt her zwischen den Kontaktflächen 6.According to FIG. 1, a rotationally symmetrical pushbutton switch is designated 1 and lies directly on a flat printed
Ausser der Schnappscheibe 3 liegt auf der Leiterplatte eine an sich bekannte Frontplatte 7 mit einer Ausstanzung 8 auf, in welche die Schnappscheibe 3 eingesetzt ist.In addition to the
Auf der Schnappscheibe 3 liegt eine Tast- und Zentrierkappe 11 mit ihrem Krafteinleitungsring 11a auf; sie besitzt eine leicht nach aussen gewölbte Oberseite 22, vgl. Fig. 3. Die Tast- und Zentrierkappe 11 wird zwischen der Schnappscheibe 3 und einer dementsprechend vorgespannten Abdeckfolie 12 gehalten. Diese überdeckt sowohl die Frontplatte 7 als auch die, beispielsweise mehrfach vorhandenen daneben liegenden weiteren Tast- und Zentrierkappen 11 ganzflächig staub- und wasserdicht.On the
Als Abdeckfolie 12 haben sich an sich bekannte elastische Dekorfolien bewährt. Voraussetzung hierfür ist, dass sie derart dimensioniert sind, dass sie im Bereich der Ausstanzung 8 in der Frontplatte 7 eine gewisse Auslenkung zulassen, die zur Betätigung des Tastschalters 1 ausreicht. Die Höhe der Wölbung der Oberseite 22 der Tast- und Zentrierkappe 11 richtet sich zur Erzielung eines eindeutigen Schaltgefühls nach der Grösse des Federweges der Schnappscheibe 3, wobei es besonders günstig ist, wenn die Höhe der Wölbung weniger als der Hälfte des Federweges entspricht.Known elastic decorative films have proven themselves as
Der Krafteinleitungsring 11a an der Unterseite der einstückigen Tast- und Zentrierkappe 11 liegt konzentrisch auf der Schnappscheibe 3 auf und schaltet diese optimal. Zudem überspannt sie zwei voneinander im bestand liegende Bereiche mit jeweils unterschiedlichen Funktionen. Der über dem Kontaktpunkt 5 befindliche Bereich der Schnappscheibe 3, mit seiner zentralen Kontaktwarze 3b, ist in Fig. 1 als Betätigungsbereich 13 bezeichnet. Der Randbereich der Tast- und Zentrierkappe 11, der über die Schnappscheibe 3 seitlich hinausragt und mit dem die Tast- und Zentrierkappe 11 sich beim Niederdrücken zur Leiterplatte 2 hin abstützen kann, ohne die Schnappscheibe 3 zu beaufschlagen, wird Stützbereich 14 genannt.The
Der Betätigungsbereich 13, gebildet durch den Krafteinleitungsring 11a, gewährleistet eine optimale Kraftverteilung auf der Oberfläche der Schnappscheibe 3 und sichert damit eine lange Lebensdauer des Tastschalters 1.The
Der Betätigungsbereich 13 und der Stützbereich 14 werden vom Boden 17 der Tast- und Zentrierkappe 11 überspannt. Der Boden 17 verteilt die eingeleiteten Betätigungskräfte jeweils anteilig in den Stützbereich 14 und den Betätigungsbereich 13. Die Schnappscheibe 3 wird daher nur von dem entsprechenden, begrenztenten Kraftanteil beaufschlagt, der auf den Betätigungsbereich 13 der Tast- und Zentrierkappe 11 entfällt und der dort, wie vorgesehen, am Kontakpunkt 5 der Schnappscheibe 3 wirksam wird.The
Bei dem in Fig. 1 veranschaulichten Tastschalter 1 findet eine bevorzugt kalottenförmige Schnappscheibe 3 Anwendung, vgl. Fig. 2. An die Tast- und Zentrierkappe 11 sind in einem Stützbereich 14 drei um 120° zueinander versetzt angeordnete Positionierungsstifte 23 mit Anschrägungen 16 angeformt. Die Stifte 23 weisen eine im unbetätigten Zustand des Tastschalters 1 in der Ebene der Oberseite der Leiterplatte 2 liegende Hinterschneidung 24 auf, und tauchen in eine zugehörige Bohrung 25 in der Leiterplatte ein. Die gewölbten Kontaktfüsse 3a der Schnappscheibe 3 liegen im unbetätigten Zustand des Tastschalters 1 zum einen auf den Hinterschneidungen 24 der Positionierungsstifte 23 und zum anderen auf der Oberseite der Leiterplatte 2 auf. Hierdurch ist es möglich, die Schnappscheibe 3 innerhalb derTast- und Zentrierkappe 11 vorzumontieren, was sowohl die Montage als auch die Positionierung der Tast- und Zentrierkappe 11 gegenüber den Kontaktfeldern auf der Leiterplatte wesentlich erleichtert. Eine massgenaue Ausstanzung 8 der Frontplatte 7 ist in diesem Falle nicht mehr erforderlich, da die Positionierungsstifte 23 die Führung der Tast- und Zentrierkappe 11 übernehmen.In the
Die Fig. 2 zeigt, bei abgenommener Abdeckfolie 12, Einzelheiten der Tast- und Zentrierkappe 11. So ist hier bei den Positionierungsstiften 23 die Ausgestaltung der Hinterschneidungen 24 mit ihren Auflagen 11 b für die Schnappscheibe 3 zu erkennen. Der Krafteinleitungsring 11a ist hier nicht dargestellt.FIG. 2 shows, with the
Der Tastschalter 1 gemäss Fig. 3, ist in analoger Weise wie der vorbeschriebene aufgebaut. Die Schnappscheibe 3 besitzt hier eine kreisrunde, wellenförmige Form und wird durch eine zentrale Drücknoppe 15 in der Tast- und Zentrierkappe 11 geschaltet. Zusätzlich ist am unteren Ende der Bohrung 25 eine Lichtquelle 18 angeordnet, welche zur Beleuchtung der hier transparent ausgeführten Tastkappe dient.The
Fig 4 zeigt eine unterschiedlich geformte Schnappscheibe 3, die grundsätzlich bei Tastschaltern der nach Fig . 1 ausgeführten Art zur Anwendung kommen kann, wobei der Schnappscheibe 3 eine nicht dargestellte Tast- und Zentrierkappe mit in der Anzahl unterschiedlichen Positionierungsstiften 23, lose anliegend, zugeordnet ist. Hierbei gehören zu der Schnappscheibe nach Fig. 4 drei Positionierungsstifte 23.FIG. 4 shows a differently
Die Schnappscheibe 3 gemäss Fig. 4 weist bogenförmige Kanten 3' auf.The
Entscheidend ist, dass die Schnappscheibe 3 innerhalb der Tast- und Zentrierkappe 11 festgelegt ist und die Positionierungsstifte 23 die Positionierung der Tast- und Zentrierkappe 11 auf der Leiterplatte 2 übernehmen.It is crucial that the
Die vorstehende Zeichnungsbeschreibung hat die Konstruktion sowohl wie die Anwendung des erfindungsgemässen Tastschalters in seinen Einzelheiten verdeutlicht. Es versteht sich jedoch für den Fachmann, dass der Grundgedanke der vorliegenden Erfindung, wie sie in den Patentansprüchen definiert ist, eine wesentlich breitere Anwendung finden kann und nicht auf die hier speziell betrachteten Ausführungsbeispiele beschränkt ist.The above description of the drawing has clarified the construction as well as the application of the push button switch according to the invention in its details. However, it is understood by the person skilled in the art that the basic idea of the present invention, as defined in the patent claims, can be used much more broadly and is not restricted to the exemplary embodiments specifically considered here.
So können die Frontplatte und die Leiterplatte in beliebiger Art miteinander lösbar passgenau verschraubt und/oder zusammengefügt werden. Der Erfindungsgegenstand lässt sich in bezug auf den Einbau und/oder die Wartungsvorschriften vollständig den Betriebsbedingungen anpassen, da er modular und lötfrei aufgebaut ist.In this way, the front plate and the printed circuit board can be screwed together and / or joined together in any desired manner. The subject matter of the invention can be completely adapted to the operating conditions with regard to the installation and / or the maintenance instructions, since it is constructed in a modular and solderless manner.
Claims (3)
- An electrical pushbutton which is arranged on a printed circuit board, with electrically conductive lead fields and contact fields which are attached to the printed circuit board (2) and with an electrically conductive snap disc (3) which rests on the lead fields of the printed circuit board and which produces or interrupts a bridging contact in the actuated condition between the lead fields on the printed circuit board and the contact fields on the printed circuit board, with a push and centering cap (11) resting on the snap disc (3), which cap is held between the snap disc (3) and a yielding cover foil (12) which sealingly covers a front plate (7) and the push and centering cap (11), and with the push and centering cap (11) bridging two mutually distanced zones, namely an actuation zone (13) with which the push and centering cap (11) rests on the snap disc (3) on its actuation point (5) and a supporting zone (14) with which the push and centering cap (11) rests during the pressing down towards the printed circuit board (2),
characterized in that
the snap disc (3) is arranged positively or nonpositively within positioning pins (23) on the push or centering cap (11), which positioning pins (23) moreover engage in respective bores (25) of the printed circuit board (2) in a slidingly movable manner. - An electrical pushbutton as claimed in claim 1, characterized in that every positioning pin (23) of the push and centering cap (11) is provided with an undercut (24) on which the snap disc (3) rests in the unactuated condition of the pushbutton.
- An electrical pushbutton as claimed in claim 1, characterized in that the snap disc (3) rests peripherally on the positioning pins (23).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4133949 | 1991-10-14 | ||
| DE4133949 | 1991-10-14 | ||
| DE4139554 | 1991-11-30 | ||
| DE4139554A DE4139554A1 (en) | 1991-10-14 | 1991-11-30 | ELECTRIC KEY SWITCH |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0538199A2 EP0538199A2 (en) | 1993-04-21 |
| EP0538199A3 EP0538199A3 (en) | 1993-06-30 |
| EP0538199B1 true EP0538199B1 (en) | 1997-09-03 |
Family
ID=25908196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92810783A Expired - Lifetime EP0538199B1 (en) | 1991-10-14 | 1992-10-13 | Electrical push botton switch |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0538199B1 (en) |
| AT (1) | ATE157808T1 (en) |
| DE (2) | DE4139554A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2294158A (en) * | 1994-10-14 | 1996-04-17 | Peter Stefan Jones | Switch assembly |
| DE29514655U1 (en) * | 1995-09-12 | 1995-11-02 | Schurter GmbH, 79346 Endingen | Electric keyboard |
| JPH0992079A (en) * | 1995-09-21 | 1997-04-04 | Fuji Polymertech Kk | Low-stroke film disc spring |
| DE19605201B4 (en) * | 1996-02-13 | 2007-04-12 | Marquardt Gmbh | Housing for an electronic key |
| FR2762454B1 (en) * | 1997-04-17 | 1999-06-04 | Afe Plasturgie | FLAT BUTTON FOR VEHICLE HEATING CONTROL PANEL |
| DE19817369A1 (en) | 1997-05-07 | 1998-11-12 | Marquardt Gmbh | Switch for washing machine, etc. |
| DE19817239B4 (en) * | 1998-04-18 | 2011-12-29 | Grothe Gmbh | Electric button |
| DE19847614A1 (en) * | 1998-10-15 | 2000-05-04 | Magenwirth Gmbh Co Gustav | Snap switch |
| DE10011800B4 (en) * | 2000-03-14 | 2007-11-29 | Robert Bosch Gmbh | lighting device |
| DE10054862A1 (en) * | 2000-11-06 | 2002-06-13 | Dyna Systems Gmbh | Electrical switch, in particular piezo switch, with optical and / or mechanical feedback of the switching process |
| DE102004004136B4 (en) * | 2004-01-28 | 2006-04-20 | Braun Gmbh | Small electrical appliance with a switching device |
| DE102007049571A1 (en) * | 2007-10-16 | 2009-04-23 | BSH Bosch und Siemens Hausgeräte GmbH | Home appliance control device |
| DE102009004975B3 (en) * | 2009-01-14 | 2009-12-24 | Sick Ag | Switching device e.g. optoelectronic sensor, for e.g. solar energy industry, has snapping disk including edge connected with housing, where area of disk is formed as reversible and deformable decoupling area that is conterminous with edge |
| DE102009036209B4 (en) * | 2009-08-05 | 2012-01-26 | Trw Automotive Electronics & Components Gmbh | Illuminable push-button group and its use as an illuminated control panel in motor vehicles |
| DE102010037551A1 (en) * | 2010-09-15 | 2012-03-15 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | switch |
| JP5717249B2 (en) * | 2011-04-22 | 2015-05-13 | アルプス電気株式会社 | Movable contact member and switch device using the movable contact member |
| EP2996129B1 (en) | 2014-09-11 | 2017-07-19 | Wincor Nixdorf International GmbH | Apparatus for detecting a manipulation of an object |
| DE102019103268A1 (en) * | 2019-02-11 | 2020-08-13 | HAT-tec GmbH | Pressure switch device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7901665U1 (en) * | 1979-01-22 | 1981-07-16 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Keypad having a plurality of pushbutton switches |
| US4365120A (en) * | 1981-04-13 | 1982-12-21 | Kb Denver, Inc. | Illuminated keyboard |
| JPS63254624A (en) * | 1987-04-10 | 1988-10-21 | 株式会社 石井表記 | Manufacture of membrane and panel switch |
| DE3728166A1 (en) * | 1987-08-24 | 1989-03-30 | Ernst Neubert | Printed circuit board push-button switch |
| CH674279A5 (en) * | 1987-09-04 | 1990-05-15 | Alex Christen | Solder-free snap key switch with helical spring - has doubly-sprung head secured to contact carrier by lateral projections from feet pressed into holes |
| CH676765A5 (en) * | 1988-06-14 | 1991-02-28 | Elma Electronic Ag |
-
1991
- 1991-11-30 DE DE4139554A patent/DE4139554A1/en not_active Withdrawn
-
1992
- 1992-10-13 EP EP92810783A patent/EP0538199B1/en not_active Expired - Lifetime
- 1992-10-13 AT AT92810783T patent/ATE157808T1/en active
- 1992-10-13 DE DE59208850T patent/DE59208850D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4139554A1 (en) | 1993-04-15 |
| EP0538199A2 (en) | 1993-04-21 |
| ATE157808T1 (en) | 1997-09-15 |
| EP0538199A3 (en) | 1993-06-30 |
| DE59208850D1 (en) | 1997-10-09 |
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