WO1998031027A1 - Power-driven device - Google Patents

Power-driven device Download PDF

Info

Publication number
WO1998031027A1
WO1998031027A1 PCT/DE1998/000038 DE9800038W WO9831027A1 WO 1998031027 A1 WO1998031027 A1 WO 1998031027A1 DE 9800038 W DE9800038 W DE 9800038W WO 9831027 A1 WO9831027 A1 WO 9831027A1
Authority
WO
WIPO (PCT)
Prior art keywords
push button
switching device
electrically conductive
circuit board
housing
Prior art date
Application number
PCT/DE1998/000038
Other languages
German (de)
French (fr)
Inventor
Klaus Mayer
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1998031027A1 publication Critical patent/WO1998031027A1/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/24—Reinforcing the conductive pattern
    • H05K3/245—Reinforcing conductive patterns made by printing techniques or by other techniques for applying conductive pastes, inks or powders; Reinforcing other conductive patterns by such techniques
    • H05K3/247—Finish coating of conductors by using conductive pastes, inks or powders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0302—Properties and characteristics in general
    • H05K2201/0314—Elastomeric connector or conductor, e.g. rubber with metallic filler
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
    • H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process

Definitions

  • the invention relates to a switching device in which a pressure body produces an electrical connection on a printed circuit board when actuated.
  • a known switching device (EP 0 600 943 B1) has a pressure body which is designed to be electrically conductive at least on one end face. For switching, the pressure body is pressed onto electrical connection surfaces of a printed circuit board. In this case, an electrical connection between the connection surfaces is established by the pressure body.
  • the pressure body is designed to be soft and elastic so that the connection surfaces on the printed circuit board are not damaged or worn. With such a switching device, the connection surfaces can still be worn, as a result of which the switching behavior is deteriorated.
  • the invention is based on the problem of creating a switching device which is worn as little as possible in the long run.
  • Claim 1 solved.
  • pads made of an elastic material are applied to a circuit board.
  • a pushbutton which creates an electrical connection between the connection surfaces when it is pressed down, can be made both of a hard, metallic see material as well as be made from an elastic material.
  • the switching device is more resistant to abrasion when switching.
  • the switching behavior improves, since position tolerances of the pressure element are also better compensated for.
  • the push button of the switching device is made of a hard material, the push button can be more easily attached to a housing or can be more easily inserted into the housing during the manufacturing process.
  • the pushbutton can have an electrically conductive metal layer on the end face for easy manufacture.
  • the pushbutton can also be made entirely of a material that is only slightly elastic, such as metal.
  • the connection areas on the printed circuit board can easily be applied to the printed circuit board using the screen printing process.
  • Figure 1 shows a section through a switching device according to the invention
  • FIG. 2 shows a section through a further exemplary embodiment of a switching device.
  • a switching device according to the invention has a printed circuit board 1 (FIG. 1) on which at least two conductor tracks are applied as electrically conductive connection surfaces 2.
  • the connection pads 2 are connected to an electronic circuit arranged on the circuit board 1 and not shown in the figures.
  • connection surfaces 2 are electrically connected to one another, this corresponds to a closed switch. If the electrical connection is interrupted again, this corresponds to an open switch.
  • the push button 3 is arranged in a housing 5 which encloses the circuit board 1.
  • the circuit board 1 is fastened to the housing 5 via a holder 6.
  • the housing 5 is designed to be soft and elastic, at least in the area of the push button 3.
  • the rest of the housing 5 can be made rigid or made of metal.
  • the pushbutton 3 is made of an electrically insulating material into which electrically conductive metal particles 7 are introduced. This makes the push button 3 electrically conductive. In addition, the push button 3 is stiffened by the metal particles 7, which ensures a safe switching function.
  • the pads 2 on the circuit board 1 are not worn by the constant depression of the push button 3, the pads 2 are made of a soft elastic material with rubber-elastic, resilient properties.
  • connection pads 2 can be applied to the printed circuit board 1, for example, by screen printing. Likewise, the remaining conductor tracks of the circuit board 1 can be applied in one operation together with the connection areas 2 using the screen printing method.
  • FIG. 2 shows a further exemplary embodiment of the switching device, elements of the same construction or function having the same reference symbols as in FIG. 1.
  • the push button 3 has only a thin, electrically conductive metal layer 8 (FIG. 2) which is fastened to the push button 3 and thus forms the end face 4 of the push button 3.
  • the entire push button 3 can be made entirely of metal as a metal layer 8.
  • the pushbutton 3 is electrically conductive on its end face 4. A switching function is thus reliably carried out as soon as the end face 4 rests on the connection faces 2.
  • connection surfaces 2 Due to the resilient, soft-elastic connection surfaces 2, wear of the connection surfaces 2 is reduced, since these are deformed by pressing the pushbutton 3, but return to their original shape after the pressure on the connection surfaces 2 has given in. This is ensured by the soft, elastic and resilient material of the connection surfaces 2.
  • the push button 3 and the housing 5 can, for example, be made of silicone, polycarbonate or polybutylene terephthalate, which, depending on the requirements, are made of glass fibers can be mechanically reinforced.
  • Polymers can be used as material for the connection surfaces 2
  • Polymers or rubber are used, which are made electrically conductive by introduced silver particles. Polymers can be applied to the printed circuit board 1 in the form of a soft, elastic conductive paste by printing processes, such as screen printing, or by dispensing with needle nozzles. The thickness of the pads 2 is in the range less than 1 mm (usually about 100 microns).
  • this switching device is particularly suitable for use as a push-button switch in portable remote controls, such as are used, for example, for remote-controlled locking systems of a motor vehicle.
  • the switching device can also be used for so-called smart cards (credit card-sized chip cards with pushbuttons).
  • a switching signal is triggered, which is evaluated by the circuit on circuit board 1. If the pushbutton 3 is provided as a locking and / or unlocking button, then after actuation of the pushbutton 3, a code signal is sent, by means of which the locking or unlocking of the vehicle doors is controlled after receipt in the motor vehicle. With the push button 3, comfort functions such as closing or opening the windows, adjusting the seats, switching on the heating, etc. can also be controlled remotely.
  • the switching device according to the invention can also be used for other purposes, wherever switching devices with small dimensions and low wear are required.
  • the switching device has the advantage that it is simple in construction and simple to manufacture.
  • the housing 5 can be produced together with the push button 3 in one operation by a molding process, such as injection molding.
  • the housing 5 in the area of the pushbutton 3 is advantageously made soft-elastic and otherwise hard-elastic.
  • the housing 5 is sealed against external influences such as dust or liquids. If the housing 5 is electrically conductive (through conductive particles or through a metal housing), it is also immune to interference from electromagnetic radiation.
  • the pushbutton 3 can be inserted into the injection molding tool during injection molding and thus integrated into the housing 5.
  • the housing 5 can also be used as a so-called "three-dimensional circuit board". Such printed circuit boards are also known to experts under the name "MID printed circuit boards” (Molded Interconnected Device).
  • MID printed circuit boards manufactured Interconnected Device

Abstract

The invention concerns a power-driven device presenting a push key (3), the front face of which is electroconductive. Pushing said key (3) produces an electrical connection on the circuit board (1) by pressing the front face (4) against two conductors (2). In order to prevent the circuits (2) from wearing out too much, these are made of a flexible material. (Fig. 1)

Description

Beschreibungdescription
Elektrische SchaltvorrichtungElectrical switching device
Die Erfindung betrifft eine Schaltvorrichtung, bei der ein Druckkörper gemäß Oberbegriff von Anspruch 1 bei Betätigen eine elektrisch Verbindung auf einer Leiterplatte herstellt.The invention relates to a switching device in which a pressure body produces an electrical connection on a printed circuit board when actuated.
Eine bekannte Schaltvorrichtung (EP 0 600 943 Bl) weist einen Druckkörper auf, der zumindest an einer Stirnfläche elektrisch leitend ausgebildet ist. Zum Schalten wird der Druckkörper auf elektrische Anschlußflächen einer Leiterplatte niedergedrückt . Dabei wird durch den Druckkörper eine elektrische Verbindung zwischen den Anschlußflächen hergestellt. Der Druckkörper ist dabei weichelastisch ausgebildet, damit die Anschlußflächen auf der Leiterplatte nicht beschädigt oder abgenutzt werden. Bei einer solchen Schaltvorrichtung können die Anschlußflächen dennoch abgenutzt werden, wodurch das Schaltverhalten verschlechtert wird.A known switching device (EP 0 600 943 B1) has a pressure body which is designed to be electrically conductive at least on one end face. For switching, the pressure body is pressed onto electrical connection surfaces of a printed circuit board. In this case, an electrical connection between the connection surfaces is established by the pressure body. The pressure body is designed to be soft and elastic so that the connection surfaces on the printed circuit board are not damaged or worn. With such a switching device, the connection surfaces can still be worn, as a result of which the switching behavior is deteriorated.
Der Erfindung liegt das Problem zugrunde, eine Schaltvorrichtung zu schaffen, die auf Dauer möglichst wenig abgenutzt wird.The invention is based on the problem of creating a switching device which is worn as little as possible in the long run.
Dieses Problem wird erfindungsgemäß durch die Merkmale vonAccording to the invention, this problem is solved by the features of
Patentanspruch 1 gelöst. Dabei sind Anschlußflächen aus einem elastischen Material auf einer Leiterplatte aufgebracht. Dadurch kann eine Drucktaste, die mit ihrer Stirnfläche beim Niederdrücken eine elektrische Verbindung zwischen den An- schlußflächen her stellt, sowohl aus einem harten, metalli- sehen Material als auch aus einem elastischen Material hergestellt werden. Die Schaltvorrichtung ist beständiger gegen Abrieb beim Schalten. Außerdem verbessert sich das Schaltverhalten, da auch Lagetoleranzen des Druckkörpers besser ausge- glichen werden.Claim 1 solved. Here, pads made of an elastic material are applied to a circuit board. As a result, a pushbutton, which creates an electrical connection between the connection surfaces when it is pressed down, can be made both of a hard, metallic see material as well as be made from an elastic material. The switching device is more resistant to abrasion when switching. In addition, the switching behavior improves, since position tolerances of the pressure element are also better compensated for.
Falls die Drucktaste der Schaltvorrichtung aus einem harten Material hergestellt ist, so kann die Drucktaste leichter an einem Gehäuse befestigt werden oder beim Herstellungsvorgang des Gehäuses leichter in dieses eingefügt werden.If the push button of the switching device is made of a hard material, the push button can be more easily attached to a housing or can be more easily inserted into the housing during the manufacturing process.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben. So kann die Drucktaste zur einfachen Herstellung eine elektrisch leitende Metallschicht an der Stirnfläche aufweisen. Die Drucktaste kann auch vollmassiv aus einem nur wenig elastischem Material, wie beispielsweise Metall, hergestellt sein. Die Anschlußflächen auf der Leiterplatte können im Siebdruckverfahren einfach auf die Leiterplatte aufgebracht werden.Advantageous embodiments of the invention are described in the subclaims. The pushbutton can have an electrically conductive metal layer on the end face for easy manufacture. The pushbutton can also be made entirely of a material that is only slightly elastic, such as metal. The connection areas on the printed circuit board can easily be applied to the printed circuit board using the screen printing process.
Ausführungsbeispiele der Erfindung werden im folgenden anhand der schematischen Zeichnungen näher erläutert. Es zeigen:Exemplary embodiments of the invention are explained in more detail below with reference to the schematic drawings. Show it:
Figur 1: einen Schnitt durch eine erfindungsgemäße Schalt- Vorrichtung undFigure 1 shows a section through a switching device according to the invention and
Figur 2: einen Schnitt durch ein weiteres Ausführungsbei- spiel einer Schaltvorrichtung. Eine erfindungsgemäße Schaltvorrichtung weist eine Leiterplatte 1 (Figur 1) auf, auf der zumindest zwei Leiterbahnen als elektrisch leitende Anschlußflächen 2 aufgebracht sind. Die Anschlußflächen 2 sind mit einer auf der Leiterplatte 1 angeordneten, in den Figuren nicht dargestellten elektronischen Schaltung verbunden.FIG. 2 shows a section through a further exemplary embodiment of a switching device. A switching device according to the invention has a printed circuit board 1 (FIG. 1) on which at least two conductor tracks are applied as electrically conductive connection surfaces 2. The connection pads 2 are connected to an electronic circuit arranged on the circuit board 1 and not shown in the figures.
Sobald die zwei Anschlußflächen 2 elektrisch miteinander verbunden werden, so entspricht dies einem geschlossenen Schal- ter. Wenn die elektrische Verbindung wieder unterbrochen wird, so entspricht dies einem offenen Schalter.As soon as the two connection surfaces 2 are electrically connected to one another, this corresponds to a closed switch. If the electrical connection is interrupted again, this corresponds to an open switch.
Als Schaltelement dient hier ein Druckkörper oder eine Drucktaste 3, die zumindest an ihrer Stirnfläche 4 elektrisch lei- tend ausgebildet ist. Falls ein Benutzer die Drucktaste 3 niederdrückt (siehe Pfeile in den Figuren 1 und 2), so liegt die Stirnfläche 4 zumindest auf jeweils einem Teil jeder Anschlußfläche 2 auf. Infolgedessen wird eine elektrische Verbindung zwischen den beiden Anschlußflächen 2 hergestellt, welches dem Schließen eines Schalters entspricht. Folglich wird ein Schaltsignal erzeugt, das in der Schaltung ausgewertet wird. Die Schaltung erzeugt dann gegebenenfalls ein Steuersignal .A pressure element or a pushbutton 3, which is designed to be electrically conductive at least on its end face 4, serves as the switching element here. If a user presses the push button 3 (see arrows in FIGS. 1 and 2), the end face 4 rests on at least a part of each connection face 2. As a result, an electrical connection is made between the two pads 2, which corresponds to the closing of a switch. As a result, a switching signal is generated which is evaluated in the circuit. The circuit then possibly generates a control signal.
Die Drucktaste 3 ist in einem Gehäuse 5 angeordnet, das die Leiterplatte 1 umschließt. Die Leiterplatte 1 ist über eine Halterung 6 an dem Gehäuse 5 befestigt. Folglich bleibt die Leiterplatte 1 gegenüber dem Gehäuse 5 weitgehend starr in seiner Lage, selbst wenn mit der Drucktaste 3 auf die Leiter- platte 1 gedrückt wird. Damit die Drucktaste 3 einfach niedergedrückt werden kann, ist das Gehäuse 5 zumindest im Bereich der Drucktaste 3 weichelastisch ausgebildet. Das restliche Gehäuse 5 kann harte- lastisch ausgebildet oder aus Metall hergestellt sein.The push button 3 is arranged in a housing 5 which encloses the circuit board 1. The circuit board 1 is fastened to the housing 5 via a holder 6. As a result, the circuit board 1 remains largely rigid in its position with respect to the housing 5, even when the circuit board 1 is pressed with the pushbutton 3. So that the push button 3 can simply be depressed, the housing 5 is designed to be soft and elastic, at least in the area of the push button 3. The rest of the housing 5 can be made rigid or made of metal.
Bei dem Ausführungsbeispiel nach Figur 1 ist die Drucktaste 3 aus einem elektrisch isolierenden Material hergestellt, in das elektrisch leitende Metallpartikel 7 eingebracht sind. Dadurch wird die Drucktaste 3 elektrisch leitend. Überdies wird die Drucktaste 3 durch die Metallpartikel 7 versteift, wodurch eine sichere Schaltfunktion gewährleistet wird.In the exemplary embodiment according to FIG. 1, the pushbutton 3 is made of an electrically insulating material into which electrically conductive metal particles 7 are introduced. This makes the push button 3 electrically conductive. In addition, the push button 3 is stiffened by the metal particles 7, which ensures a safe switching function.
Damit die Anschlußflächen 2 auf der Leiterplatte 1 nicht durch das ständige Niederdrücken der Drucktaste 3 abgenutzt werden, sind die Anschlußflächen 2 aus einem weichelastischen Material mit gummielastischen, federnden Eigenschaften hergestellt.So that the pads 2 on the circuit board 1 are not worn by the constant depression of the push button 3, the pads 2 are made of a soft elastic material with rubber-elastic, resilient properties.
Die Anschlußflächen 2 können beispielsweise im Siebdruckverfahren auf die Leiterplatte 1 aufgebracht werden. Ebenso können die restlichen Leiterbahnen der Leiterplatte 1 in einem Arbeitsgang zusammen mit den Anschlußflächen 2 im Siebdruckverfahren aufgebracht werden.The connection pads 2 can be applied to the printed circuit board 1, for example, by screen printing. Likewise, the remaining conductor tracks of the circuit board 1 can be applied in one operation together with the connection areas 2 using the screen printing method.
Es genügt allerdings, wenn nur die Anschlußflächen 2 im Bereich der Drucktaste 3 aus einem weichelastischen Material hergestellt sind, während die restlichen Leiterbahnen aus einem harten, elektrisch leitenden Metall, wie Kupfer, Gold, Silber usw. , hergestellt sind. In der Figur 2 ist ein weiteres Ausführungsbeispiel der Schaltvorrichtung dargestellt, wobei Elemente gleicher Konstruktion oder Funktion dieselben Bezugszeichen wie in Figur 1 tragen.However, it is sufficient if only the connection surfaces 2 in the area of the pushbutton 3 are made of a soft elastic material, while the remaining conductor tracks are made of a hard, electrically conductive metal, such as copper, gold, silver, etc. FIG. 2 shows a further exemplary embodiment of the switching device, elements of the same construction or function having the same reference symbols as in FIG. 1.
Bei diesem Ausführungsbeispiel weist die Drucktaste 3 lediglich ein dünne, elektrisch leitende Metallschicht 8 (Figur 2) auf, die an der Drucktaste 3 befestigt ist und somit die Stirnfläche 4 der Drucktaste 3 bildet.In this exemplary embodiment, the push button 3 has only a thin, electrically conductive metal layer 8 (FIG. 2) which is fastened to the push button 3 and thus forms the end face 4 of the push button 3.
Für die Erfindung ist es unwesentlich, wie dick die Metallschicht 8 ausgebildet ist. So kann die gesamte Drucktaste 3 vollmassiv aus Metall als Metallschicht 8 hergestellt sein. Wesentlich hingegen ist, daß die Drucktaste 3 an ihrer Stirnfläche 4 elektrisch leitend ausgebildet ist. Somit wird sicher eine Schaltfunktion durchgeführt, sobald die Stirnfläche 4 auf den Anschlußflächen 2 aufliegt.For the invention, it is immaterial how thick the metal layer 8 is. Thus, the entire push button 3 can be made entirely of metal as a metal layer 8. On the other hand, it is essential that the pushbutton 3 is electrically conductive on its end face 4. A switching function is thus reliably carried out as soon as the end face 4 rests on the connection faces 2.
Durch die nachgiebigen, weichelastischen Anschlußflächen 2 wird ein Abnutzen der Anschlußflächen 2 vermindert, da diese durch das Niederdrücken der Drucktaste 3 zwar verformt, aber nach Nachgeben des Drucks auf die Anschlußflächen 2 in ihre ursprüngliche Form wieder zurückkehren. Dies wird durch das weichelastische und federnde Material der Anschlußflächen 2 gewährleistet .Due to the resilient, soft-elastic connection surfaces 2, wear of the connection surfaces 2 is reduced, since these are deformed by pressing the pushbutton 3, but return to their original shape after the pressure on the connection surfaces 2 has given in. This is ensured by the soft, elastic and resilient material of the connection surfaces 2.
Die Drucktaste 3 und das Gehäuse 5 können beispielsweise aus Silikon, aus Polycarbonat oder aus Polybutylenterephtalat hergestellt sein, die je nach Anforderung durch Glasfasern mechanisch verstärkt sein können. Als Leiterplatte 1 können herkömmliche Leiterplatten, beispielsweise aus FR4 verwendet werden.The push button 3 and the housing 5 can, for example, be made of silicone, polycarbonate or polybutylene terephthalate, which, depending on the requirements, are made of glass fibers can be mechanically reinforced. Conventional circuit boards, for example made of FR4, can be used as circuit board 1.
Als Material für die Anschlußflächen 2 können PolymerePolymers can be used as material for the connection surfaces 2
(Kunststoffe oder Gummi) verwendet werden, die durch eingebrachte Silberpartikel elektrisch leitend gemacht werden. Polymere können in Form einer weichelastischen Leitpaste durch Druckverfahren, wie Siebdruck, oder durch Dispensen mit Na- deldüsen auf die Leiterplatte 1 aufgebracht werden. Die Dicke der Anschlußflächen 2 liegt im Bereich kleiner als 1 mm (üblicherweise etwa 100 μm) .(Plastics or rubber) are used, which are made electrically conductive by introduced silver particles. Polymers can be applied to the printed circuit board 1 in the form of a soft, elastic conductive paste by printing processes, such as screen printing, or by dispensing with needle nozzles. The thickness of the pads 2 is in the range less than 1 mm (usually about 100 microns).
Eine solche Schaltvorrichtung ist vorteilhafterweise in ihren Abmessungen sehr gering. Dadurch eignet sich diese Schaltvorrichtung besonders für den Einsatz als Tastschalter bei tragbaren Fernbedienungen, wie sie beispielsweise für fernbedienbare Schließsysteme eines Kraftfahrzeugs verwendet werden. Die Schaltvorrichtung kann auch für sogenannte Smart Cards (scheckkartengroße Chipkarten mit Drucktasten) verwendet werden.The dimensions of such a switching device are advantageously very small. As a result, this switching device is particularly suitable for use as a push-button switch in portable remote controls, such as are used, for example, for remote-controlled locking systems of a motor vehicle. The switching device can also be used for so-called smart cards (credit card-sized chip cards with pushbuttons).
Bei Betätigen der Drucktaste 3 wird ein Schaltsignal ausgelöst, das durch die Schaltung auf der Leiterplatte 1 ausge- wertet wird. Wenn die Drucktaste 3 als Ver- und/oder Entriegelungstaste vorgesehen ist, so wird nach Betätigen der Drucktaste 3 ein Codesignal ausgesendet, durch das nach Empfang im Kraftfahrzeug das Ver- bzw. Entriegeln der Fahrzeugtüren gesteuert wird. Mit der Drucktaste 3 können auch Komfortfunktion, wie Schließen oder Öffnen der Fenster, Einstellen der Sitze, Einschalten der Heizung, usw. fernbedient gesteuert werden.When pushbutton 3 is pressed, a switching signal is triggered, which is evaluated by the circuit on circuit board 1. If the pushbutton 3 is provided as a locking and / or unlocking button, then after actuation of the pushbutton 3, a code signal is sent, by means of which the locking or unlocking of the vehicle doors is controlled after receipt in the motor vehicle. With the push button 3, comfort functions such as closing or opening the windows, adjusting the seats, switching on the heating, etc. can also be controlled remotely.
Die erfindungsgemäße Schaltvorrichtung kann auch für andere Zwecke verwendet werden, und zwar überall dort, wo Schaltvorrichtungen mit geringen Abmessungen bei geringem Verschleiß benötigt werden.The switching device according to the invention can also be used for other purposes, wherever switching devices with small dimensions and low wear are required.
Die erfindungsgemäße Schaltvorrichtung hat den Vorteil, daß sie einfach aufgebaut und einfach herzustellen ist. So kann beispielsweise das Gehäuse 5 zusammen mit der Drucktaste 3 in einem Arbeitsgang durch ein Gießverfahren, wie beispielsweise Spritzguß, hergestellt werden. Vorteilhaft wird dabei das Ge- häuse 5 im Bereich der Drucktaste 3 weichelastisch und ansonsten hartelastisch ausgebildet. Somit wird das Gehäuse 5 dicht gegen äußere Einflüsse, wie Staub oder Flüssigkeiten. Falls das Gehäuse 5 elektrisch leitend ist (durch leitfähige Partikel oder durch Metallgehäuse) , so ist es auch vor elek- tromagnetischer Strahlung störsicher.The switching device according to the invention has the advantage that it is simple in construction and simple to manufacture. For example, the housing 5 can be produced together with the push button 3 in one operation by a molding process, such as injection molding. The housing 5 in the area of the pushbutton 3 is advantageously made soft-elastic and otherwise hard-elastic. Thus, the housing 5 is sealed against external influences such as dust or liquids. If the housing 5 is electrically conductive (through conductive particles or through a metal housing), it is also immune to interference from electromagnetic radiation.
Wenn die Drucktaste 3 aus einem harten Material, wie Metall besteht, so kann die Drucktaste 3 beim Spritzgießen in das Spritzgußwerkzeug eingelegt und somit in das Gehäuse 5 inte- griert werden. Das Gehäuse 5 kann auch als sogenannte "dreidimensionale Leiterplatte" verwendet werden. Solche Leiterplatten sind der Fachwelt auch unter der Bezeichnung "MID- Leiterplatten" (Molded Interconnected Device) bekannt. Bei einem solchen Gehäuse 5 kann die Drucktaste 3 mit ihrer Me- tallschicht 8 besonders einfach hergestellt werden. If the pushbutton 3 consists of a hard material, such as metal, the pushbutton 3 can be inserted into the injection molding tool during injection molding and thus integrated into the housing 5. The housing 5 can also be used as a so-called "three-dimensional circuit board". Such printed circuit boards are also known to experts under the name "MID printed circuit boards" (Molded Interconnected Device). In such a housing 5, the pushbutton 3 with its metal layer 8 can be produced in a particularly simple manner.

Claims

Patentansprüche claims
1. Elektrische Schaltvorrichtung mit1. Electrical switching device with
- einer Drucktaste (3) , die zumindest an einer Stirnfläche (4) elektrisch leitend ausgebildet ist, und mit- A push button (3), which is at least on one end face (4) is electrically conductive, and with
- einer Leiterplatte (1) mit zumindest zwei elektrisch leitenden Anschlußflächen (2) , auf denen die Stirnfläche (4) der Drucktaste (3) aufliegt, wenn die Drucktaste (3) niedergedrückt wird, wodurch ein Schaltsignal infolge einer elektrischen Verbindung der beiden Anschlußflächen (2) erzeugt wird, dadurch gekennzeichnet, daß die Anschlußflächen (2) aus einem elastischen Material auf der Leiterplatte (1) aufgebracht sind.- A printed circuit board (1) with at least two electrically conductive connection surfaces (2) on which the end face (4) of the push button (3) rests when the push button (3) is depressed, whereby a switching signal due to an electrical connection of the two connection surfaces ( 2) is generated, characterized in that the connection surfaces (2) made of an elastic material are applied to the printed circuit board (1).
2. Schaltvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Stirnfläche (4) durch eine elektrisch leitende Metallschicht (8) gebildet wird, die an der Drucktaste (3) befestigt ist.2. Switching device according to claim 1, characterized in that the end face (4) is formed by an electrically conductive metal layer (8) which is attached to the push button (3).
3. Schaltvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Drucktaste (3) aus einem elektrisch isolierenden Material hergestellt ist, in das elektrisch leitende Partikel3. Switching device according to claim 1, characterized in that the push button (3) is made of an electrically insulating material in the electrically conductive particles
(7) eingebettet sind, wodurch auch die Stirnfläche (4) der Drucktaste (3) elektrisch leitend wird.(7) are embedded, which also makes the end face (4) of the push button (3) electrically conductive.
4. Schaltvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Drucktaste (3) vollmassiv aus elektrisch leitendem Material hergestellt ist und an einem Gehäuse (5) befestigt ist. 4. Switching device according to claim 1, characterized in that the push button (3) is made entirely of solid electrically conductive material and is attached to a housing (5).
5. Schaltvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Anschlußflächen (2) aus einer elastischen Leitpaste hergestellt sind, die durch ein Druckverfahren oder durch Dispensen auf die Leiterplatte (1) auf- gebracht sind.5. Switching device according to one of the preceding claims, characterized in that the connection surfaces (2) are made of an elastic conductive paste, which are applied to the printed circuit board (1) by a printing process or by dispensing.
6. Schaltvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gehäuse (5) durch ein Gießverfahren hergestellt ist und im Bereich der Drucktaste (3) elastisch ausgebildet ist. 6. Switching device according to one of the preceding claims, characterized in that the housing (5) is made by a casting process and is elastic in the region of the push button (3).
PCT/DE1998/000038 1997-01-13 1998-01-07 Power-driven device WO1998031027A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997100846 DE19700846C1 (en) 1997-01-13 1997-01-13 Electrical switching device for connections on printed circuit board
DE19700846.1 1997-01-13

Publications (1)

Publication Number Publication Date
WO1998031027A1 true WO1998031027A1 (en) 1998-07-16

Family

ID=7817243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/000038 WO1998031027A1 (en) 1997-01-13 1998-01-07 Power-driven device

Country Status (2)

Country Link
DE (1) DE19700846C1 (en)
WO (1) WO1998031027A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6801140B2 (en) * 2001-01-02 2004-10-05 Nokia Corporation System and method for smart clothing and wearable electronic devices
CN100339921C (en) * 2004-02-23 2007-09-26 华硕电脑股份有限公司 Body case of keystroke part without penetrable gap
CN103748790A (en) * 2011-07-01 2014-04-23 伊莱克斯家用产品公司 Method of manufacturing an electrical switching element

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904979A1 (en) * 1999-02-06 2000-08-10 Valeo Schalter & Sensoren Gmbh Printed circuit board for an electrical switch
DE102004031403A1 (en) * 2004-06-29 2006-02-02 Siemens Ag Switching module comprises a carrier and a housing section that forms a hollow chamber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699294A (en) * 1971-05-18 1972-10-17 Flex Key Corp Keyboard, digital coding, switch for digital logic, and low power detector switches
US3735068A (en) * 1970-09-26 1973-05-22 Alps Electric Co Ltd Push-button switch with resilient conductive contact member and with helical conductive networks
FR2189848A1 (en) * 1972-06-22 1974-01-25 Philips Nv
US4315238A (en) * 1979-09-24 1982-02-09 Eventoff Franklin Neal Bounceless switch apparatus
US4492949A (en) * 1983-03-18 1985-01-08 Barry Wright Corporation Tactile sensors for robotic gripper and the like

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128778A1 (en) * 1991-08-29 1993-03-04 Siemens Ag HOUSING PART FOR AN ELECTRICAL CIRCUIT ARRANGEMENT TO BE PROTECTED FROM POLLUTANTS e.g. A VEHICLE LOCKING SYSTEM

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735068A (en) * 1970-09-26 1973-05-22 Alps Electric Co Ltd Push-button switch with resilient conductive contact member and with helical conductive networks
US3699294A (en) * 1971-05-18 1972-10-17 Flex Key Corp Keyboard, digital coding, switch for digital logic, and low power detector switches
FR2189848A1 (en) * 1972-06-22 1974-01-25 Philips Nv
US4315238A (en) * 1979-09-24 1982-02-09 Eventoff Franklin Neal Bounceless switch apparatus
US4492949A (en) * 1983-03-18 1985-01-08 Barry Wright Corporation Tactile sensors for robotic gripper and the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6801140B2 (en) * 2001-01-02 2004-10-05 Nokia Corporation System and method for smart clothing and wearable electronic devices
CN100339921C (en) * 2004-02-23 2007-09-26 华硕电脑股份有限公司 Body case of keystroke part without penetrable gap
CN103748790A (en) * 2011-07-01 2014-04-23 伊莱克斯家用产品公司 Method of manufacturing an electrical switching element

Also Published As

Publication number Publication date
DE19700846C1 (en) 1998-04-23

Similar Documents

Publication Publication Date Title
DE69918797T2 (en) Adapter made of conductive elastomeric material
DE102005043893B4 (en) Wireless keychain for vehicles
EP1878033B1 (en) Electrically conducting contact and method for production thereof
DE10212794A1 (en) Plastic injection molded component, e.g. a vehicle door handle, comprises a pre-finished module which holds electrical components and which is surrounded by a soft plastic mantle
WO1999055990A1 (en) Housing part with an actuating element
EP0451676A2 (en) Input keyboard for a consumer electronic device
EP1567314A1 (en) Compression moulded part
WO1998020450A1 (en) Contactless smart card with a transponder coil
WO1998031027A1 (en) Power-driven device
WO2001008182A1 (en) Touch-contact for chip cards
EP1110365B1 (en) Top part of a housing for a communications terminal
DE10212768A1 (en) Vehicle door handle, for a keyless entry system, has an electronic component within the hollow interior and a connecting plug, assembled in advance before installation
DE19700848C1 (en) Electrical switching device e.g. for motor vehicle anti-theft device
EP2221753B1 (en) Smart card with pushbutton switch
EP1570631B1 (en) Input device, especially for a mobile telephone, module comprising an input device, mobile telephone and method for the production thereof
EP0614204B1 (en) Switch dome for push-button switch
DE102005008791A1 (en) Actuating device in a motor vehicle, connected to a system for operator identification
DE2928146A1 (en) Touch foil keyboard front plate - has transparent layers with diaphragms carrying contacts closing through opening of foil
DE10251178B3 (en) Illuminated control element with electroluminescent film
DE19750307A1 (en) Electronic apparatus, in particular telephone apparatus and process for its manufacture
EP1287487B1 (en) Chip card
EP1160814B1 (en) Electric switch structure
DE3123438C2 (en) Switching arrangement
EP1215696B1 (en) Keypad assembly for an electrical device
DE102012002467B4 (en) Component with a planar control element

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR CN JP KR MX RU UA US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998530455

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase