EP1075007B1 - Electric push-buotton switch - Google Patents

Electric push-buotton switch Download PDF

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Publication number
EP1075007B1
EP1075007B1 EP00114687A EP00114687A EP1075007B1 EP 1075007 B1 EP1075007 B1 EP 1075007B1 EP 00114687 A EP00114687 A EP 00114687A EP 00114687 A EP00114687 A EP 00114687A EP 1075007 B1 EP1075007 B1 EP 1075007B1
Authority
EP
European Patent Office
Prior art keywords
push
contact
button
button switch
switch according
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
Application number
EP00114687A
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German (de)
French (fr)
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EP1075007A1 (en
Inventor
Michael Beisiegel
Andreas Hartmann
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Delphi Technologies Inc
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Delphi Technologies Inc
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Publication date
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Publication of EP1075007A1 publication Critical patent/EP1075007A1/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
    • H01H13/023—Light-emitting indicators
    • 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
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches 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
    • H01H13/52—Switches 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 immediately upon removal of operating force, e.g. bell-push switch

Definitions

  • the invention relates to an electrical push button switch with one associated with an actuation approach Button and with at least one in a housing with connection contacts arranged contact from a contact track and a Contact spring, the contact spring and the contact track aligned parallel to the direction of actuation of the button are.
  • EP-B-0 789 927 is an electrical push button switch according to the preamble of claim 1 a button which can be actuated about an eccentric axis is known, which carries a tab transmitting the actuation and with a arranged in a connection-carrying housing, provide a contact spring with a punched-out contact cable is.
  • the tab on the button acts almost parallel aligned to the direction of actuation of the button, springy clamped and pivotable switching element, wherein the fulcrum of the switching element opposite the axis of the Button is located, and the switching element carries a cam that the Tongue parallel to the direction of actuation of the button clamped contact spring. So that the cam of the Switching element can act on the contact tongue is one relatively expensive storage of the switching element necessary, wherein the storage is spring-loaded and a return movement the key after the application.
  • DE-U-71 38 974 discloses an electric one Push button switch with one inside a switch housing a contact rail mounted contact rocker and one around Axis actuated pushbutton.
  • the bearings for the axis of rotation the feeler are off-center above and to the side of arranged the contact rail and the sensing element has a Nose on the resilient, cut free from the contact rocker Tongue of the contact rocker acts.
  • DE-C-34 21 021 shows an electrical Push button switch with an operating rocker, on which two symmetrical resilient legs are molded between them a cam is attached, which alternately in two recesses a contact spring pushes, causing a pivoting the contact spring is in its opposite switching position.
  • the two tabs are springy and on theirs the cam facing sides shaped such that after End of the actuation of the cams in its zero position returns.
  • DE-AS-21 48 804 discloses a push button switch, where a push button pivots when actuated executes about an axis and the rotational movement on one rectilinear movable contact slide is transferable.
  • lever-like button head On lever-like button head is made of plastic in one piece two hinged and snap-in at the free end Manufactured foot parts.
  • the aforementioned push button switches all have a relatively complex Switch mechanism for redirecting the direction of actuation the button in the direction of action of a corresponding one Contact spring on.
  • push button switches are known, on the button of which Actuation approach to act on a switch contact is provided.
  • the Switch contact designed as a microswitch and on one aligned perpendicular to the direction of actuation of the button Printed circuit board arranged. Because of the necessary alignment the circuit board, the push button switch has a relative large cross section.
  • the object is achieved in that the actuation approach the button is assigned a forced operation, that when the button is pressed, the Contact spring through the actuation approach and thus Closes the contact.
  • Pushbutton switch provided due to manufacture the extremely simple switching mechanism at low cost leaves.
  • a redirection of the direction of actuation of the button together the assigned actuation approach to the application the contact spring is made only by the positive guidance of the actuation approach.
  • the forced operation is the closing of the contact safely by the actuation approach at Depress the button elastically in the direction of the contact spring is deformed.
  • the contact spring is expedient in the area of their fixed end with one towards of the actuating approach pointing U-shaped bend.
  • Manufactured lead frame thus includes both the contact spring as well as the contact path.
  • the U-shaped bend of the contact spring causes a shortening of the stretched length as well a slight bend in the same, causing the free end the contact spring in an area above the assigned Contact path is located.
  • the formation of the contact path and the contact spring in a lead frame provides a relative easy handling of these contact elements during production the push button switch safely.
  • a light-emitting diode serves as a search and Functional lighting and another LED shows the Activation of an anti-theft alarm system of a motor vehicle on.
  • the contacts in one piece with the lead frame molded and surrounded by a protective collar.
  • Punching grid at least partially in the middle of a floor of the housing vertically molded web.
  • the lead frame is overmolded in a plastic injection molding process, at the same time the web and the bottom are formed.
  • the web is slidable in opposite guide grooves collar associated with the button.
  • the Collar on the inside of the actuation approach which in the is substantially L-shaped, the end face of the short leg formed on the inside of the collar and the front of the long leg is a switch cam to act on the contact spring.
  • This is the elastic deformation of the actuation approach at one Actuation of the button to act on the contact spring ensured, the switch cam for a sufficient Contact surface on the contact spring ensures.
  • the web on its narrow sides opposite stops for the collar of the button If the collar on the stops of the bridge is the lower end of the switching path reached.
  • the web has on the side on which the contact spring is arranged, the Positive guidance for the actuation approach, the opposite and spaced-apart L-shaped guide lugs includes, the end faces of the long legs the web are fixed and the bevelled short leg grasp the actuation shoulder and guide it.
  • the management approaches expediently embrace the Switch cams formed on the free end of the actuating attachment, which comes to rest on the contact spring.
  • draws the forced operation is characterized by a simple design and can be molded in one piece with the web.
  • the contact spring is in the effective area of the actuating approach with a transverse groove or a punctiform Increase.
  • the transverse groove or the point elevation represent a resistance to the actuation approach, the to be overcome when the button is pressed and also is tactile perceptible as a switching threshold.
  • the collar points the button on the circumferential webs, in corresponding Grooves of the housing are guided.
  • the webs are as Installation coding formed, which is why assembly errors due incorrect insertion of the collar into the housing is excluded are.
  • the collar of the button expediently points to the bottom facing end face a nose for receiving a compression spring on, one end of which is on the associated end face of the collar and the other end of which is supported on the ground.
  • This compression spring supports the restoring effect of the contact spring. However, it is not absolutely necessary.
  • the push button switch 1 designed as a warning light switch comprises a key 2, the surface of which is backlit Symbol 3 is provided and the one at the bottom Collar 4 wears.
  • the collar 4 is in a recess of the button 2 used and by means of peripheral knobs 5 in corresponding Bores 6 of the key 2 set.
  • a housing 7 with side clip arms 8 for attachment in a corresponding Installation opening of a motor vehicle surrounds the Collar 4, which has opposite webs 9, which are inserted into assigned grooves of the housing 7.
  • the molded on opposite side surfaces of the collar 4 Bars 9 are dimensioned differently, which is why the correct Joining the collar 4 and the housing 7 ensured is.
  • the housing 7 is on the opposite of the key 2 Side closed by a bottom 10, the clip openings 11 of the housing 7 engaging clip lugs 12.
  • On the bottom 10 is a connection contacts 13 surrounding Protective collar 14.
  • a web 15 is formed on the floor 10 perpendicular to this, which extends into the collar 4 of the button 2 and there slidably inserted in opposite guide grooves 16 is.
  • a lead frame 45 is formed in the web 15, the contact tracks 17 arranged parallel to one another, 18, 19, 20 and a contact spring associated with the contact track 18 21 includes.
  • the contact tracks 17, 18, 19, 20 and Contact spring 21 are parallel to the direction of actuation Key 2 aligned and each have a connection contact 13 on.
  • the contact spring 21 is with a U-shaped bend 22 provided from the stretched length of the contact spring 21 causes a displacement of the free end 23, after which the free end 23 to lie above the contact track 18 comes. Furthermore, the U-shaped bend 22 supports the spring action the contact spring 21.
  • the web 15 has a clamping device 26 for the connecting contacts 27 of the light-emitting diodes 24, 25 on.
  • the web 15 is a positive guide 28 for one end Switching cams 29 having actuation projection 30 of the Collar 4 assigned to button 2, the two L-shaped guide lugs 31 includes.
  • the guide lugs 30 are opposite and receiving the contact spring 21 between them each with the end face 32 of its long leg 33 the web 15 set.
  • the short legs 34 of the guide lugs 30 are provided with bevels 35 and embrace the switching cam 29 of the actuating projection 30.
  • the actuating projection 30 is essentially L-shaped and with the end face 36 of the short leg 37 molded onto the inside 38 of the collar 4.
  • the front 39 of the long leg 40 of the actuating projection 30 carries the Switch cam 29, the long leg 40 approximately parallel is aligned with the inside 38 of the collar 4.

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  • Push-Button Switches (AREA)

Description

Die Erfindung bezieht sich auf einen elektrischen Drucktastenschalter mit einer mit einem Betätigungsansatz verbundenen Taste und mit mindestens einem in einem Gehäuse mit Anschlußkontakten angeordneten Kontakt aus einer Kontaktbahn und einer Kontaktfeder, wobei die Kontaktfeder sowie die Kontaktbahn parallel zur Betätigungsrichtung der Taste ausgerichtet sind.The invention relates to an electrical push button switch with one associated with an actuation approach Button and with at least one in a housing with connection contacts arranged contact from a contact track and a Contact spring, the contact spring and the contact track aligned parallel to the direction of actuation of the button are.

Aus der EP-B-0 789 927 ist ein elektrischer Tastschalter gemäß Oberbegriff von Patentanspruch 1 mit einer um eine außermittige Achse betätigbaren Taste bekannt, die eine die Betätigung übertragende Lasche trägt und mit einer in einem Anschlußkontakt tragenden Gehäuse angeordneten, eine freigestanzte Kontaktzuge aufweisenden Kontaktfeder versehen ist. Die Lasche der Taste wirkt auf ein annähernd parallel zur Betätigungsrichtung der Taste ausgerichtetes, federnd eingespanntes und verschwenkbares Schaltglied, wobei der Drehpunkt des Schaltgliedes entgegengesetzt der Achse der Taste liegt, und das Schaltglied einen Nocken trägt, der die Kontaktzunge der parallel zur Betätigungsrichtung der Taste eingespannten Kontaktfeder beaufschlagt. Damit der Nocken des Schaltgliedes die Kontaktzunge beaufschlagen kann, ist eine relativ aufwendige Lagerung des Schaltgliedes notwendig, wobei die Lagerung federbelastet ausgeführt ist und eine Rückstellbewegung der Taste nach der Beaufschlagung bewirkt.From EP-B-0 789 927 is an electrical push button switch according to the preamble of claim 1 a button which can be actuated about an eccentric axis is known, which carries a tab transmitting the actuation and with a arranged in a connection-carrying housing, provide a contact spring with a punched-out contact cable is. The tab on the button acts almost parallel aligned to the direction of actuation of the button, springy clamped and pivotable switching element, wherein the fulcrum of the switching element opposite the axis of the Button is located, and the switching element carries a cam that the Tongue parallel to the direction of actuation of the button clamped contact spring. So that the cam of the Switching element can act on the contact tongue is one relatively expensive storage of the switching element necessary, wherein the storage is spring-loaded and a return movement the key after the application.

Im weiteren offenbart das DE-U-71 38 974 einen elektrischen Tastschalter mit einer innerhalb eines Schaltergehäuses auf einer Kontaktschiene gelagerten Kontaktwippe und einem um eine Achse betätigbaren Tastglied. Die Lager für die Drehachse des Tastgliedes sind außermittig oberhalb und seitlich von der Kontaktschiene angeordnet und das Tastglied weist eine Nase auf, die auf eine federnde, aus der Kontaktwippe freigeschnittene Zunge der Kontaktwippe einwirkt.Furthermore, DE-U-71 38 974 discloses an electric one Push button switch with one inside a switch housing a contact rail mounted contact rocker and one around Axis actuated pushbutton. The bearings for the axis of rotation the feeler are off-center above and to the side of arranged the contact rail and the sensing element has a Nose on the resilient, cut free from the contact rocker Tongue of the contact rocker acts.

Des weiteren zeigt die DE-C-34 21 021 einen elektrischen Tastschalter mit einer Betätigungswippe, an der zwei symmetrische federelastische Schenkel angeformt sind, zwischen denen ein Nocken befestigt ist, der wechselweise in zwei Vertiefungen einer Kontaktfeder stößt, wodurch eine Schwenkung der Kontaktfeder in ihre entgegengesetzte Schaltstellung erfolgt. Die beiden Laschen sind federnd ausgeführt und auf ihren dem Nocken zugewandten Seiten derart ausgeformt, daß nach Beendigung der Betätigung der Nocken wieder in seine NullStellung zurückkehrt.Furthermore, DE-C-34 21 021 shows an electrical Push button switch with an operating rocker, on which two symmetrical resilient legs are molded between them a cam is attached, which alternately in two recesses a contact spring pushes, causing a pivoting the contact spring is in its opposite switching position. The two tabs are springy and on theirs the cam facing sides shaped such that after End of the actuation of the cams in its zero position returns.

Ferner offenbart die DE-AS-21 48 804 einen Drucktastenschalter, bei dem eine Drucktaste bei Betätigung eine Schwenkbewegung um eine Achse ausführt und die Drehbewegung auf einen geradlinig bewegbaren Kontaktschieber übertragbar ist. Ein hebelartiger Tastenkopf ist einstückig aus Kunststoff mit zwei angelenkten und am jeweils freien Ende einschnappbaren Fußteilen hergestellt. Hierbei ist das eine Fußteil mit dem Chassis und das andere Fußteil mit einem Antriebsteil des Kontaktschiebers verbindbar.Furthermore, DE-AS-21 48 804 discloses a push button switch, where a push button pivots when actuated executes about an axis and the rotational movement on one rectilinear movable contact slide is transferable. On lever-like button head is made of plastic in one piece two hinged and snap-in at the free end Manufactured foot parts. Here is a foot part with the Chassis and the other foot part with a drive part of the Contact slide connectable.

Die vorgenannten Tastschalter weisen alle eine relativ aufwendige Schaltmechanik zur Umlenkung der Betätigungsrichtung der Taste in die Beaufschlagungsrichtung einer entsprechenden Kontaktfeder auf.The aforementioned push button switches all have a relatively complex Switch mechanism for redirecting the direction of actuation the button in the direction of action of a corresponding one Contact spring on.

Überdies sind Drucktastenschalter bekannt, an deren Taste ein Betätigungsansatz zur Beaufschlagung eines Schaltkontaktes vorgesehen ist. Bei einem solchen Drucktastenschalter ist der Schaltkontakt als Mikroschalter ausgeführt und auf einer senkrecht zur Betätigungsrichtung der Taste ausgerichteten Leiterplatte angeordnet. Wegen der notwendigen Ausrichtung der Leiterplatte weist der Drucktastenschalter einen relativ großen Querschnitt auf.In addition, push button switches are known, on the button of which Actuation approach to act on a switch contact is provided. With such a push button switch is the Switch contact designed as a microswitch and on one aligned perpendicular to the direction of actuation of the button Printed circuit board arranged. Because of the necessary alignment the circuit board, the push button switch has a relative large cross section.

Es ist Aufgabe der Erfindung, einen elektrischen Drucktastenschalter der eingangs genannten Art zu schaffen, der kompakt sowie robust aufgebaut und bei hoher Funktionssicherheit kostengünstig herzustellen ist.It is an object of the invention to provide an electrical push button switch of the type mentioned at the beginning to create the compact as well as robustly built and inexpensive with high functional reliability is to be produced.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß dem Betätigungsansatz der Taste eine Zwangsführung zugeordnet ist, die bei einer Betätigung der Taste eine Beaufschlagung der Kontaktfeder durch den Betätigungsansatz und damit ein Schließen des Kontaktes bewirkt.According to the invention the object is achieved in that the actuation approach the button is assigned a forced operation, that when the button is pressed, the Contact spring through the actuation approach and thus Closes the contact.

Aufgrund dieser Maßnahmen wird ein störungsunanfälliger Drucktastenschalter zur Verfügung gestellt, der sich aufgrund der äußerst einfachen Schaltmechanik kostengünstig fertigen läßt. Eine Umlenkung der Betätigungsrichtung der Taste mitsamt dem zugeordneten Betätigungsansatz zur Beaufschlagung der Kontaktfeder erfolgt lediglich durch die Zwangsführung des Betätigungsansatzes. Die Zwangsführung stellt das Schließen des Kontaktes sicher, indem der Betätigungsansatz beim Niederdrücken der Taste elastisch in Richtung der Kontaktfeder verformt wird.Because of these measures, a person is less prone to failure Pushbutton switch provided due to manufacture the extremely simple switching mechanism at low cost leaves. A redirection of the direction of actuation of the button together the assigned actuation approach to the application the contact spring is made only by the positive guidance of the actuation approach. The forced operation is the closing of the contact safely by the actuation approach at Depress the button elastically in the direction of the contact spring is deformed.

Bei einer vorteilhaften Ausgestaltung der Erfindung sind die Kontaktfeder und die Kontaktbahn Kontaktelemente eines gemeinsamen Stanzgitters, deren freie Enden sich überlappen und deren feste Enden nebeneinander angeordnet sind. Bevorzugt sind die Kontaktfeder und die Kontaktbahn im wesentlichen parallel zueinander angeordnet. Zweckmäßigerweise ist die Kontaktfeder im Bereich ihres festen Endes mit einer in Richtung des Betätigungsansatzes weisenden U-förmigen Abwinklung versehen. Das mittels entsprechender Stanz- und Umformtechnik hergestellte Stanzgitter umfaßt somit sowohl die Kontaktfeder als auch die Kontaktbahn. Die U-förmige Abwinklung der Kontaktfeder bewirkt eine Verkürzung der gestreckten Länge sowie eine geringe Abwinklung derselben, wodurch sich das freie Ende der Kontaktfeder in einem Bereich oberhalb der zugeordneten Kontaktbahn befindet. Die Ausbildung der Kontaktbahn und der Kontaktfeder in einem Stanzgitter stellt eine relativ einfache Handhabung dieser Kontaktelemente während der Produktion des Drucktastenschalters sicher.In an advantageous embodiment of the invention Contact spring and the contact track contact elements of a common Lead frames with free ends overlapping and the fixed ends of which are arranged side by side. Prefers the contact spring and the contact track are essentially parallel arranged to each other. The contact spring is expedient in the area of their fixed end with one towards of the actuating approach pointing U-shaped bend. Using the appropriate stamping and forming technology Manufactured lead frame thus includes both the contact spring as well as the contact path. The U-shaped bend of the contact spring causes a shortening of the stretched length as well a slight bend in the same, causing the free end the contact spring in an area above the assigned Contact path is located. The formation of the contact path and the contact spring in a lead frame provides a relative easy handling of these contact elements during production the push button switch safely.

Zur Integration einer Beleuchtung in dem Drucktastenschalter sind bevorzugt der Kontaktbahn des Kontaktes weitere Kontaktbahnen des Stanzgitters zur Beaufschlagung von Leuchtdioden zugeordnet. Hierbei dient eine Leuchtdiode als Such- und Funktionsbeleuchtung und eine weitere Leuchtdiode zeigt die Aktivierung einer Diebstahlwarnanlage eines Kraftfahrzeuges an.For integrating lighting in the push button switch are preferably the contact path of the contact further contact paths of the lead frame for loading light-emitting diodes assigned. Here, a light-emitting diode serves as a search and Functional lighting and another LED shows the Activation of an anti-theft alarm system of a motor vehicle on.

Um die Anzahl der Bauteile des Drucktastenschalters gering zu halten und die Anschlußkontakte zu schützen, sind zweckmäßigerweise die Anschlußkontakte einstückig mit dem Stanzgitter ausgeformt und von einem Schutzkragen umgeben.To keep the number of components of the push button switch small hold and protect the connection contacts are expedient the contacts in one piece with the lead frame molded and surrounded by a protective collar.

Nach einer weiteren Ausgestaltung der Erfindung ist das Stanzgitter zumindest teilweise in einen mittig an einem Boden des Gehäuses senkrecht angeformten Steg eingelassen. Das Stanzgitter wird im Kunststoff-Spritzgußverfahren umspritzt, wobei gleichzeitig der Steg mitsamt dem Boden ausgeformt werden.According to a further embodiment of the invention Punching grid at least partially in the middle of a floor of the housing vertically molded web. The The lead frame is overmolded in a plastic injection molding process, at the same time the web and the bottom are formed.

Zur Realisierung einer zweckdienlichen Führung der Taste, ist der Steg verschiebbar in gegenüberliegende Führungsnuten eines mit der Taste verbundenen Kragens eingesetzt.To realize an appropriate guidance of the key, is the web is slidable in opposite guide grooves collar associated with the button.

Bei einer Weiterbildung des Erfindungsgedankens trägt der Kragen auf seiner Innenseite den Betätigungsansatz, der im wesentlichen L-förmig ausgebildet ist, wobei die Stirnseite des kurzen Schenkels an der Innenseite des Kragens angeformt ist und die Stirnseite des langen Schenkels einen Schaltnocken zur Beaufschlagung der Kontaktfeder trägt. Hierdurch ist die elastische Verformung des Betätigungsansatzes bei einer Betätigung der Taste zur Beaufschlagung der Kontaktfeder sichergestellt, wobei der Schaltnocken für eine hinreichende Auflagefläche auf der Kontaktfeder sorgt.In a further development of the inventive concept, the Collar on the inside of the actuation approach, which in the is substantially L-shaped, the end face of the short leg formed on the inside of the collar and the front of the long leg is a switch cam to act on the contact spring. This is the elastic deformation of the actuation approach at one Actuation of the button to act on the contact spring ensured, the switch cam for a sufficient Contact surface on the contact spring ensures.

Um eine Beschädigung des Drucktastenschalters durch die Einwirkung einer relativ großen Betätigungskraft zu verhindern und gleichzeitig den Schaltweg zu begrenzen, weist bevorzugt der Steg an seinen Schmalseiten gegenüberliegende Anschläge für den Kragen der Taste auf. Wenn der Kragen an den Anschlägen des Steges anliegt, ist das untere Ende des Schaltweges erreicht.To damage the push button switch by the action to prevent a relatively large actuating force and at the same time to limit the switching travel preferably the web on its narrow sides opposite stops for the collar of the button. If the collar on the stops of the bridge is the lower end of the switching path reached.

In einer weiteren Ausgestaltung der Erfindung weist der Steg auf der Seite, auf der die Kontaktfeder angeordnet ist, die Zwangsführung für den Betätigungsansatz auf, die gegenüberliegende sowie zueinander beabstandete L-förmige Führungsansätze umfaßt, wobei die Stirnseiten der langen Schenkel auf dem Steg festgelegt sind und die mit Abschrägungen versehenen kurzen Schenkel den Betätigungsansatz umgreifen und zwangsführen. Zweckmäßigerweise umgreifen die Führungsansätze den am freien Ende des Betätigungsansatzes angeformten Schaltnocken, der auf der Kontaktfeder zur Anlage kommt. Somit zeichnet sich die Zwangsführung durch eine einfache Bauweise aus und ist einstückig mit dem Steg ausformbar.In a further embodiment of the invention, the web has on the side on which the contact spring is arranged, the Positive guidance for the actuation approach, the opposite and spaced-apart L-shaped guide lugs includes, the end faces of the long legs the web are fixed and the bevelled short leg grasp the actuation shoulder and guide it. The management approaches expediently embrace the Switch cams formed on the free end of the actuating attachment, which comes to rest on the contact spring. Thus draws the forced operation is characterized by a simple design and can be molded in one piece with the web.

Zur Erzeugung eines taktil erfassbaren Schaltgefühls, ist vorzugsweise auf der den Führungsansätzen gegenüberliegenden Seite des Steges eine Erhöhung ausgeformt, die mit einem am Kragen der Taste angeformten Klipsarm zusammenwirkt. Wenn die Stirnseite des Klipsarmes an der Erhöhung zur Anlage kommt, ist es erforderlich, die Betätigungskraft geringfügig zu erhöhen, um den Klipsarm elastisch zu verformen und auf die Erhöhung zu bewegen. Diese Erhöhung der auf die Taste wirkenden Betätigungskraft ist taktil wahrnehmbar.To generate a tactile shift feeling, is preferably on the opposite of the guide approaches On the side of the web an increase is formed, which with an am Collar of button molded clip arm cooperates. If the End of the clip arm comes into contact with the elevation, it is necessary to slightly increase the actuation force, to deform the clip arm elastically and to raise it to move. This increase in the acting on the key Actuating force is tactile perceptible.

Alternativ hierzu ist die Kontaktfeder im Wirkbereich des Betätigungsansatzes mit einer Querrille oder einer punktuellen Erhöhung versehen. Die Querrille bzw. die punktuelle Erhöhung stellen einen Widerstand für den Betätigungsansatz dar, der bei einer Betätigung der Taste zu überwinden ist und ebenfalls als Schaltschwelle taktil wahrnehmbar ist.Alternatively, the contact spring is in the effective area of the actuating approach with a transverse groove or a punctiform Increase. The transverse groove or the point elevation represent a resistance to the actuation approach, the to be overcome when the button is pressed and also is tactile perceptible as a switching threshold.

Um eine geführte geradlinige Bewegung der Taste mitsamt dem Kragen innerhalb des Gehäuses sicherzustellen, weist der Kragen der Taste umfangsseitige Stege auf, die in korrespondierenden Nuten des Gehäuses geführt sind. Die Stege sind als Einbaucodierung ausgebildet, weshalb Montagefehler aufgrund eines falschen Einsetzens des Kragens in das Gehäuse ausgeschlossen sind.For a straight-line movement of the key together with the To ensure collars within the housing, the collar points the button on the circumferential webs, in corresponding Grooves of the housing are guided. The webs are as Installation coding formed, which is why assembly errors due incorrect insertion of the collar into the housing is excluded are.

Zweckmäßigerweise weist der Kragen der Taste an der dem Boden zugewandten Stirnseite eine Nase zur Aufnahme einer Druckfeder auf, deren eines Ende sich an der zugeordneten Stirnseite des Kragens und deren anderes Ende sich am Boden abstützt. Diese Druckfeder unterstützt die Rückstellwirkung der Kontaktfeder. Sie ist jedoch nicht zwingend erforderlich.The collar of the button expediently points to the bottom facing end face a nose for receiving a compression spring on, one end of which is on the associated end face of the collar and the other end of which is supported on the ground. This compression spring supports the restoring effect of the contact spring. However, it is not absolutely necessary.

Es versteht sich, daß die vorstehend genannten und nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the above and below Features to be explained not only in each case specified combination, but also in other combinations are usable without the scope of the present invention to leave.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispieles unter Bezugnahme auf die zugehörigen Zeichnungen näher erläutert. Es zeigen:

Fig.1
eine Seitenansicht eines erfindungsgemäßen Drucktastenschalters,
Fig.2
eine Ansicht auf die Darstellung nach Fig. 1 in Richtung des Pfeils II,
Fig.3
einen vergrößerten Schnitt durch die Darstellung nach Fig. 1 gemäß der Linie III-III,
Fig.4
eine vergrößerte Darstellung einer Einzelheit IV nach Fig. 3 und
Fig.5
eine um 90° gedrehte Einzeldarstellung des Stanzgitters nach Fig. 3 im verkleinerten Maßstab.
The invention is explained below using an exemplary embodiment with reference to the accompanying drawings. Show it:
Fig.1
a side view of a push button switch according to the invention,
Fig.2
1 in the direction of arrow II,
Figure 3
2 shows an enlarged section through the representation according to FIG. 1 along the line III-III,
Figure 4
an enlarged view of a detail IV of FIG. 3 and
Figure 5
a rotated by 90 ° individual representation of the lead frame according to FIG. 3 on a reduced scale.

Der als Warnlichtschalter ausgebildete Drucktastenschalter 1 umfaßt eine Taste 2, deren Oberfläche mit einem hinterleuchtbaren Symbol 3 versehen ist und die an ihrer Unterseite einen Kragen 4 trägt. Der Kragen 4 ist in eine Aussparung der Taste 2 eingesetzt und mittels umfangsseitiger Noppen 5 in korrespondierenden Bohrungen 6 der Taste 2 festgelegt. Ein Gehäuse 7 mit seitlichen Klipsarmen 8 zur Befestigung in einer entsprechenden Einbauöffnung eines Kraftfahrzeuges umgibt den Kragen 4, wobei dieser gegenüberliegende Stege 9 aufweist, die in zugeordnete Nuten des Gehäuses 7 eingesetzt sind. Die auf gegenüberliegenden Seitenflächen des Kragens 4 ausgeformten Stege 9 sind unterschiedlich bemessen, weshalb das korrekte Fügen des Kragens 4 und des Gehäuses 7 sichergestellt ist. Das Gehäuse 7 ist auf der der Taste 2 gegenüberliegenden Seite durch einen Boden 10 verschlossen, der in Klipsöffnungen 11 des Gehäuses 7 eingreifende Klipsnasen 12 aufweist. An dem Boden 10 befindet sich ein Anschlußkontakte 13 umgebender Schutzkragen 14.The push button switch 1 designed as a warning light switch comprises a key 2, the surface of which is backlit Symbol 3 is provided and the one at the bottom Collar 4 wears. The collar 4 is in a recess of the button 2 used and by means of peripheral knobs 5 in corresponding Bores 6 of the key 2 set. A housing 7 with side clip arms 8 for attachment in a corresponding Installation opening of a motor vehicle surrounds the Collar 4, which has opposite webs 9, which are inserted into assigned grooves of the housing 7. The molded on opposite side surfaces of the collar 4 Bars 9 are dimensioned differently, which is why the correct Joining the collar 4 and the housing 7 ensured is. The housing 7 is on the opposite of the key 2 Side closed by a bottom 10, the clip openings 11 of the housing 7 engaging clip lugs 12. On the bottom 10 is a connection contacts 13 surrounding Protective collar 14.

Auf dem Boden 10 ist senkrecht zu diesem ein Steg 15 ausgebildet, der sich in den Kragen 4 der Taste 2 erstreckt und dort in gegenüberliegende Führungsnuten 16 verschiebbar eingesetzt ist. In den Steg 15 ist ein Stanzgitter 45 eingeformt, das parallel zueinander angeordnete Kontaktbahnen 17, 18, 19, 20 sowie eine der Kontaktbahn 18 zugeordnete Kontaktfeder 21 umfaßt. Die Kontaktbahnen 17, 18, 19, 20 und die Kontaktfeder 21 sind parallel zur Betätigungsrichtung der Taste 2 ausgerichtet und weisen jeweils einen Anschlußkontakt 13 auf. Die Kontaktfeder 21 ist mit einer U-förmigen Abwinklung 22 versehen, die aus der gestreckten Länge der Kontaktfeder 21 eine Verschiebung des freien Endes 23 bewirkt, wonach das freie Ende 23 oberhalb der Kontaktbahn 18 zu liegen kommt. Ferner unterstützt die U-förmige Abwinklung 22 die Federwirkung der Kontaktfeder 21.A web 15 is formed on the floor 10 perpendicular to this, which extends into the collar 4 of the button 2 and there slidably inserted in opposite guide grooves 16 is. A lead frame 45 is formed in the web 15, the contact tracks 17 arranged parallel to one another, 18, 19, 20 and a contact spring associated with the contact track 18 21 includes. The contact tracks 17, 18, 19, 20 and Contact spring 21 are parallel to the direction of actuation Key 2 aligned and each have a connection contact 13 on. The contact spring 21 is with a U-shaped bend 22 provided from the stretched length of the contact spring 21 causes a displacement of the free end 23, after which the free end 23 to lie above the contact track 18 comes. Furthermore, the U-shaped bend 22 supports the spring action the contact spring 21.

An jeweils zwei der Kontaktbahnen 17, 18, 19, 20 ist eine Leuchtdiode 24, 25 angeschlossen, wobei die eine Leuchtdiode 24 bei eingeschalteter Diebstahlwarnanlage eines Kraftfahrzeuges leuchtet und die andere Leuchtdiode 25 als Such- und Funktionsbeleuchtung für den Drucktastenschalter 1 dient. Um die Handhabung des Bodens 11 mitsamt den Leuchtdioden 24, 25 vor deren Befestigung an den zugeordneten Kontaktbahnen 17, 18, 19, 20 zu erleichtern, weist der Steg 15 eine Klemmeinrichtung 26 für die Anschlußkontakte 27 der Leuchtdioden 24, 25 auf.There is one on each of the two contact tracks 17, 18, 19, 20 LED 24, 25 connected, the one LED 24 when the anti-theft alarm system of a motor vehicle is switched on lights up and the other LED 25 as search and Function lighting for the push button switch 1 is used. Around the handling of the floor 11 together with the light-emitting diodes 24, 25 before they are attached to the associated contact tracks 17, 18, 19, 20 to facilitate, the web 15 has a clamping device 26 for the connecting contacts 27 of the light-emitting diodes 24, 25 on.

Dem Steg 15 ist eine Zwangsführung 28 für einen endseitig einen Schaltnocken 29 aufweisenden Betätigungsansatz 30 des Kragens 4 der Taste 2 zugeordnet, die zwei L-förmige Führungsansätze 31 umfaßt. Die Führungsansätze 30 sind gegenüberliegend und die Kontaktfeder 21 zwischen sich aufnehmend jeweils mit der Stirnseite 32 ihres langen Schenkels 33 auf dem Steg 15 festgelegt. Die kurzen Schenkel 34 der Führungsansätze 30 sind mit Abschrägungen 35 versehen und umgreifen den Schaltnocken 29 des Betätigungsansatzes 30.The web 15 is a positive guide 28 for one end Switching cams 29 having actuation projection 30 of the Collar 4 assigned to button 2, the two L-shaped guide lugs 31 includes. The guide lugs 30 are opposite and receiving the contact spring 21 between them each with the end face 32 of its long leg 33 the web 15 set. The short legs 34 of the guide lugs 30 are provided with bevels 35 and embrace the switching cam 29 of the actuating projection 30.

Der Betätigungsansatz 30 ist im wesentlichen L-förmig ausgebildet und mit der Stirnseite 36 des kurzen Schenkels 37 an der Innenseite 38 des Kragens 4 angeformt. Die Stirnseite 39 des langen Schenkels 40 des Betätigungsansatzes 30 trägt den Schaltnocken 29, wobei der lange Schenkel 40 annähernd parallel zu der Innenseite 38 des Kragens 4 ausgerichtet ist.The actuating projection 30 is essentially L-shaped and with the end face 36 of the short leg 37 molded onto the inside 38 of the collar 4. The front 39 of the long leg 40 of the actuating projection 30 carries the Switch cam 29, the long leg 40 approximately parallel is aligned with the inside 38 of the collar 4.

Bei einer Betätigung der Taste 2 in Richtung des Pfeiles 44 erfolgt eine gleichgerichtete Bewegung des Kragens 4 auf dem Steg 15 innerhalb des Gehäuses 7 und der Betätigungsansatz 30 gleitet innerhalb der Zwangsführung 28, wobei der Schaltnocken 29 stets auf der Kontaktfeder 21 aufliegt. Aufgrund der Abschrägungen 35 der Führungsansätze 31 erfährt der Betätigungsansatz 30 eine elastische Verformung in Richtung der Kontaktfeder 21 und drückt diese gegen die zugeordnete Kontaktbahn 18, woraufhin ein Kontakt 41 geschlossen wird. Nach dem Loslassen der Taste 2 erfolgt aufgrund der Federwirkung der Kontaktfeder 21 eine Rückstellbewegung des Betätigungsansatzes 30 mitsamt dem Kragen 4 und der Taste 2. Um diese Rückstellbewegung zu verstärken, ist zwischen der unteren Stirnseite des Kragens 4 und dem Boden 10 eine Druckfeder 42 angeordnet, die auf einer an dieser Stirnseite des Kragens 4 angeformten Nase 43 gehaltert ist. When button 2 is pressed in the direction of arrow 44 there is a rectified movement of the collar 4 on the Web 15 within the housing 7 and the actuating projection 30 slides within the positive guide 28, the switching cam 29 always rests on the contact spring 21. Due to the The actuation approach experiences bevels 35 of the guide approaches 31 30 elastic deformation in the direction of Contact spring 21 and presses it against the associated contact path 18, whereupon a contact 41 is closed. To release of button 2 is due to the spring action the contact spring 21 a return movement of the actuating approach 30 together with the collar 4 and the button 2. Around this To reinforce the return movement is between the lower Front of the collar 4 and the bottom 10 a compression spring 42nd arranged on a on this end face of the collar 4th molded nose 43 is supported.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1.1.
Tastebutton
2.Second
Symbolsymbol
3.Third
Kragencollar
4.4th
Noppenburl
5.5th
Bohrungdrilling
6.6th
Gehäusecasing
7.7th
Klipsarmclip arm
8.8th.
Stegweb
9.9th
Bodenground
10.10th
KlipsöffnungKlipsöffnung
11.11th
KlipsnaseKlipsnase
12.12th
Anschlußkontaktconnection contact
13.13th
Schutzkragenprotective collar
14.14th
Stegweb
15.15th
Führungsnutguide
16.16th
Kontaktbahncontact track
17.17th
Kontaktbahncontact track
18.18th
Kontaktbahncontact track
19.19th
Kontaktbahncontact track
20.20th
Kontaktfedercontact spring
21.21st
U-förmige AbwinklungU-shaped bend
22.22nd
freies Endefree end
23.23rd
Leuchtdiodeled
24.24th
Leuchtdiodeled
25.25th
Klemmeinrichtungclamper
26.26th
Anschlußkontaktconnection contact
27.27th
Zwangsführungforced control
28.28th
Schaltnockenswitching cams
29.29th
Betätigungsansatzactuating extension
30.30th
Führungsansatzleadership approach
31.31st
Stirnseitefront
32.32nd
langer Schenkellong leg
33.33rd
kurzer Schenkelshort leg
34.34th
Abschrägungbevel
35.35th
Stirnseitefront
36.36th
kurzer Schenkelshort leg
37.37th
Innenseiteinside
38.38th
Stirnseitefront
39.39th
langer Schenkellong leg
40.40th
KontaktContact
41.41st
Druckfedercompression spring
42.42nd
Nasenose
43.43rd
Pfeilarrow
44.44th
Stanzgitterlead frame

Claims (16)

  1. Electrical push-button switch, having a push-button (2), which is connected to an actuating extension member (30), and having at least one contact (41), which is disposed in a housing (7) provided with connecting contacts (13) and is formed from a contact path (18) and a contact spring (21), the contact spring (21) and the contact path (18) being orientated parallel to the actuating direction of the push-button (2), characterised in that the actuating extension member (30) of the push-button (2) has associated therewith a forcible guide means (28) which, when the push-button (2) is actuated, causes the contact spring (21) to be acted upon by the actuating extension member (30) and, in consequence, causes the contact (41) to close.
  2. Electrical push-button switch according to claim 1, characterised in that the contact spring (21) and the contact path (18) are contact elements of a common stamped blank (45), the free ends (23) of which elements overlap one another, and the fixed ends of which elements are disposed adjacent one another.
  3. Electrical push-button switch according to claim 1 or 2, characterised in that the contact spring (21) and the contact path (18) are disposed substantially parallel to each other.
  4. Electrical push-button switch according to one of claims 1 to 3, characterised in that, in the region of its fixed end, the contact spring (21) is provided with a U-shaped angular portion (22), which points in the direction of the actuating extension member (30).
  5. Electrical push-button switch according to one of claims 1 to 4, characterised in that the contact path (18) of the contact (41) has associated therewith additional contact paths (17, 19, 20) of the stamped blank (45) to act on the actuation of light-emitting diodes (24, 25).
  6. Electrical push-button switch according to claim 1, characterised in that the connecting contacts (13) are formed integrally with the stamped blank (45) and are surrounded by a protective collar (14).
  7. Electrical push-button switch according to one of claims 1 to 6, characterised in that the stamped blank (45) is at least partially inserted into a web (15), which is provided vertically and centrally on a base (10) of the housing (7).
  8. Electrical push-button switch according to claim 7, characterised in that the web (15) is displaceably inserted into oppositely situated guide grooves (16) in a collar (4) connected to the push-button (2).
  9. Electrical push-button switch according to claim 8, characterised in that, on its inner side (38), the collar (4) carries the actuating extension member (30) which has a substantially L-shaped configuration, the end face (36) of the short portion (37) being provided on the inner side (38) of the collar (4), and the end face (39) of the long portion (40) carrying a switching cam (29) for acting on the actuation of the contact spring (21).
  10. Electrical push-button switch according to claim 7 or 8, characterised in that, on its narrow sides, the web (15) has oppositely situated stop members for the collar (4) of the push-button (2).
  11. Electrical push-button switch according to one of claims 7 to 10, characterised in that, on the side on which the contact spring (21) is disposed, the web (15) has the forcible guide means (28) for the actuating extension member (30), which guide means includes oppositely situated L-shaped guide extension members (31), which are spaced from one another, the end faces (32) of the long portions (33) being secured on the web (15), and the short portions (34), provided with tapered portions (35), surround and forcibly guide the actuating extension member (30).
  12. Electrical push-button switch according to claim 11, characterised in that the guide extension members (31) surround the switching cam (29), which is provided on the free end of the actuating extension member (30) and comes to abut on the contact spring (21).
  13. Electrical push-button switch according to claim 11, characterised in that a raised portion is formed on the side of the web (15) situated opposite the guide extension members (31), and it cooperates with a clip-in arm provided on the collar (4) of the push-button (2).
  14. Electrical push-button switch according to one of claims 1 to 13, characterised in that, within the operating range of the actuating extension member (30), the contact spring (21) is provided with a transverse notch or a separate raised portion.
  15. Electrical push-button switch according to one of claims 1 to 14, characterised in that the collar (4) of the push-button (2) has circumferential webs (9) which are guided in corresponding grooves in the housing (7).
  16. Electrical push-button switch according to one of claims 1 to 15, characterised in that, on the end face facing the base (10), the collar (4) of the push-button (2) has a projection member (43) for the accommodation of a compression spring (42), one end of said spring being supported on the associated end face of the collar (4), and the other end of said spring being supported on the base (10).
EP00114687A 1999-07-31 2000-07-08 Electric push-buotton switch Expired - Lifetime EP1075007B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19936195 1999-07-31
DE19936195A DE19936195C1 (en) 1999-07-31 1999-07-31 Electric push-button switch has projection of operating button cooperating with guide for closure of switch contact extending parallel to operating direction of operating button

Publications (2)

Publication Number Publication Date
EP1075007A1 EP1075007A1 (en) 2001-02-07
EP1075007B1 true EP1075007B1 (en) 2002-10-02

Family

ID=7916820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00114687A Expired - Lifetime EP1075007B1 (en) 1999-07-31 2000-07-08 Electric push-buotton switch

Country Status (2)

Country Link
EP (1) EP1075007B1 (en)
DE (2) DE19936195C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10062072A1 (en) * 2000-12-13 2002-07-04 Bosch Gmbh Robert Lead frame with contact spring
EP1267372A1 (en) * 2001-06-15 2002-12-18 GE Power Controls Italia S.p.a. Integrated lighting units to be mounted on signalling and control devices for electric control boards and the like
CN105023785B (en) * 2014-04-21 2018-09-18 星电株式会社 By compressing switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2148804C2 (en) * 1971-09-30 1978-05-11 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth PUSH BUTTON SWITCHES, IN PARTICULAR MULTIPLE PUSH BUTTON SWITCHES
DE3421021A1 (en) * 1984-06-06 1985-12-12 Fa. Albrecht Jung, 5885 Schalksmühle Plunger support of an electrical momentary-contact switch
JPH0658773B2 (en) * 1988-10-21 1994-08-03 富士電機株式会社 Small switch
DE9110485U1 (en) * 1991-08-24 1991-10-02 Blaupunkt-Werke Gmbh, 3200 Hildesheim Folding key arrangement for a touch switch
DE4439008C2 (en) * 1994-11-02 1999-05-27 Eaton Controls Gmbh Electrical push button
DE19501856C1 (en) * 1995-01-23 1996-08-01 Kostal Leopold Gmbh & Co Kg Electrical pushbutton switch e.g. for switching electrical circuits

Also Published As

Publication number Publication date
EP1075007A1 (en) 2001-02-07
DE50000586D1 (en) 2002-11-07
DE19936195C1 (en) 2000-12-07

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