EP2577700B1 - Elektrischer zwangsöffner-schalter, im besonderen für eine tragbare kommunikationsvorrichtung - Google Patents

Elektrischer zwangsöffner-schalter, im besonderen für eine tragbare kommunikationsvorrichtung Download PDF

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Publication number
EP2577700B1
EP2577700B1 EP11726903.5A EP11726903A EP2577700B1 EP 2577700 B1 EP2577700 B1 EP 2577700B1 EP 11726903 A EP11726903 A EP 11726903A EP 2577700 B1 EP2577700 B1 EP 2577700B1
Authority
EP
European Patent Office
Prior art keywords
flexible
contact
tab
central
normally closed
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.)
Active
Application number
EP11726903.5A
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English (en)
French (fr)
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EP2577700A1 (de
Inventor
Christophe Boget
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thales SA
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Filing date
Publication date
Priority claimed from FR1002193A external-priority patent/FR2960694B1/fr
Application filed by Thales SA filed Critical Thales SA
Priority to PL11726903T priority Critical patent/PL2577700T3/pl
Publication of EP2577700A1 publication Critical patent/EP2577700A1/de
Application granted granted Critical
Publication of EP2577700B1 publication Critical patent/EP2577700B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02—Single bars, rods, wires, or strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H01H1/10—Laminated contacts with divided contact surface
    • 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
    • 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/807—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 characterised by the contacts or the contact sites characterised by the spatial arrangement of the contact sites, e.g. superimposed sites
    • 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
    • H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/026—Form of contacts on different planes
    • 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
    • H01H2205/03—Apertured plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/012—Connections via underside of substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/004—Switch site location in different planes to increase density
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/012—Switch site location normally closed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/036—Minimise height
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/028—Blade spring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making

Definitions

  • the present invention relates to an electric switch with pushbutton, of normally closed type, in particular intended to equip a portable communication device keyboard.
  • the invention also relates to the manufacture of a soft keyboard normally closed electrical contact, the contact blade, the key and the corresponding soft keyboard.
  • a push-button switch is said to be of normally closed type when it is returned to its closed position in the absence of external stress, and when it passes into its open position when it is actuated by a user, in particular via the push-button .
  • Today's extremely thin and inexpensive diaphragm keypads are manufactured by printing conductive silver-based ink tracks onto plastic substrates for the purpose of creating extra-fine circuits.
  • the keys of the keyboard thus formed are all executed according to the same principle: at least two tracks are arranged vis-à-vis and are put in contact when the key is pressed. These keys thus constitute normally open electric contact type keys.
  • the electrically conductive element which makes it possible to put in contact is, as the case may be, a metal cup forming a cup contact, or a silver pellet printed on the back of the upper circuit or on the back of the decorative face placed on the circuit. .
  • This type of contact is then called comb contact with flat or thermoformed front face.
  • an electric switch with a pushbutton of normally closed type.
  • a switch conventionally comprises a printed circuit, comprising first and second contact pads, and an electrical conductor for electrically connecting the first and second contact pads.
  • Such a normally closed type switch has many elements, and therefore is particularly expensive and complex to achieve. Moreover, because of its complexity and its size, this switch is generally not suitable for a portable communication device keyboard.
  • the present invention proposes to remedy these drawbacks by providing a push-button electric switch, normally closed type, having a simple structure, economical and compact.
  • An object of the present invention is in particular the implementation of a method of manufacturing a flexible membrane keyboard comprising at least one normally closed contact key.
  • This method is remarkable in that it consists at least in equipping the keyboard with at least one duplex printed circuit comprising at least one front contact pad and a back contact pad to be arranged in the circuit.
  • the flexible blade comprising a central flexible tongue comprising the fulcrum, electrically and mechanically integral and adjacent to a first and a second lateral tongue by a common point, the first and the second lateral tongue being placed in the same plane and the central tongue being offset in position in a direction orthogonal to said plane to form a first and a second insertion space of the flexible blade at the slot, the inserting operation includes at least one step of inserting said flexible blade in the slot by clipping the first and second insertion space on the opposite edges of the slot, so as to bring to rest the central flexible tongue and respectively at least one of the first or the second lateral tongue in electrical contact with the contact pad verso and respectively recto or vice versa.
  • the fulcrum formed on the central tongue is placed in remote offset on the central tongue vis-à-vis the common point to form an inter-force lever between the point of contact of the central tongue on the stud of contact back or front and the common point.
  • Another object of the present invention is the implementation of a normally closed flexible contact blade for a duplex printed circuit.
  • Such a flexible blade is remarkable in that it comprises at least one central flexible tongue, and a first and a second lateral tongue, electrically and mechanically integral with the same common point.
  • the first and the second lateral tongue electrically and mechanically integral are placed substantially in the same plane, laterally adjacent to the central flexible tongue.
  • the central tongue is shifted in position in a direction orthogonal to the plane to form a first and a second insertion space of the printed circuit provided with a slot and at least a front contact pad and a back contact pad each disposed in the vicinity of one of the two opposite edges of this slot.
  • the contact pad of the central flexible tongue is formed by a boss; and, optionally, the contact pads of the first lateral tongue and the second lateral tongue are also formed by a boss.
  • the central flexible tongue is offset at rest in an oblique plane relative to the plane containing the first and the second lateral flexible tongue to form, by opposite stress rotation of the central flexible tongue, the first and the second insertion space. of the printed circuit between this central flexible tongue and the first and second lateral tongues respectively.
  • the blade has come cutting / stamping a sheet of a conductive material.
  • Another object of the present invention is the implementation of a contact key for a flexible membrane keyboard, such a contact key being remarkable in that it comprises at least one printed circuit provided with at least one contact pin. front contact and a back contact pad, each placed in the vicinity of one of the opposite edges of a slot in said printed circuit, and a flexible contact blade according to the invention inserted into the slot and forming an electrical contact normally closed between the front contact pad and the back contact pad.
  • the flexible blade has a fulcrum for exerting a breaking force of the normally closed electrical contact.
  • the fulcrum may be actuated by pressure on a cup or on a touch plate disposed above it.
  • the invention also relates to a flexible membrane keyboard comprising at least one key and / or a corresponding normally closed soft contact blade.
  • the manufacturing method, the normally closed electrical contact key and the corresponding keyboard which are the subject of the invention, find application in the manufacture of keyboards of all sizes, in particular small-sized keyboards for portable mobile telephony devices, the assistants larger PDAs and keyboards such as laptop or desktop keyboards, musical instruments, and others.
  • Such a switch has a particularly simple structure, in which the conductor cooperates with the two contact pads without intermediary and for which it suffices to apply a force on the second part of the conductor to separate this second part of the second range, and thus open the switch.
  • step 1 shown on the figure 1a , the method according to the invention consists in supplying and equipping the keyboard with at least one duplex printed circuit board CI comprising at least one front contact pad PR and a rear contact pad PV.
  • the double-sided printed circuit CI may consist of a printed circuit of any type, a double-sided circuit or other.
  • Step 1 is followed by a step 2, represented at figure 1b , consisting in arranging in the printed circuit Cl, between the recto contact pad PR and the contact pad verso PV, an insertion slot.
  • the insertion slot F is formed by a slot with parallel edges, traversing the entire thickness of the printed circuit CI.
  • Step 2 is followed by a step 3 comprising a substep 3 (1), shown in FIG. figure 1c , comprising inserting into the insertion slot F a flexible conductive strip LS forming a normally closed electrical contact between the front contact pad PR and the contact pad verso PV.
  • a step 3 comprising a substep 3 (1), shown in FIG. figure 1c , comprising inserting into the insertion slot F a flexible conductive strip LS forming a normally closed electrical contact between the front contact pad PR and the contact pad verso PV.
  • the flexible blade LS comprises a bearing point PA for exerting a breaking force of the normally closed electrical contact.
  • sub-step 3 (2) shown in FIG. figure 1d , in a sectional view in the sectional plane AA of the printed circuit CI of the figure 1c , the normally closed electrical contact contact button obtained following the insertion of the flexible blade LS.
  • the insertion operation is to introduce the flexible blade LS by clipping, or in any other way, on each of the parallel edges of the slot F, as will be described below.
  • the flexible blade LS may advantageously comprise a central flexible tongue LC comprising the fulcrum PA, of which it is electrically and mechanically secured by a common point PC, and a first LL1 and a second LL2 lateral tongue.
  • the central flexible tongue LC is adjacent and parallel to the first and second lateral tongue LL1 and LL2 and joined to the latter by the common point PC.
  • the first and the second lateral tongue LL1 and LL2 are placed substantially in the same plane P but the central tongue LC is offset in position in a direction orthogonal to the plane P, to form a first EI1 and a second EI2 space of insertion, each between the second flexible tongue LC and the opposite ends of the two lateral tongues LL1 and LL2.
  • step 3 (1) shown in FIG. figure 1c the operation of insertion of the flexible blade LS into the slot F is performed by insertion and clipping of the first respectively of the second insertion space EI1, EI2 on one of the opposite edges of the slot F, so as to bring to rest the central tongue LC respectively the two lateral tongues LLI and LL2 in electrical contact of the contact pad verso PV and respectively of the front contact pad PR or vice versa.
  • the support point PA formed on the central tongue LC is placed in remote offset on the central tongue vis-à-vis the common point PC to form an inter-force lever between the point of contact of the first central tongue on the back or front contact pad and the common point PC.
  • the normally closed contact flexible blade according to the subject of the invention comprising at least the central flexible tongue LC, which it is electrically and mechanically secured to the common point PC.
  • the flexible blade LS further comprises the first LL1 and second LL2 side tab electrically and mechanically integral each of the common point PC.
  • the first and second lateral tabs are adjacent and parallel to the central flexible tongue LC, but are offset in position in a direction orthogonal to the plane P to form the first EI1 and the second EI2 insertion space of the printed circuit CI provided with the slot F, the front contact pad and the back contact pad disposed in the vicinity of two opposite edges of this slot.
  • the plane P substantially including the lateral tongues is none other than the plane of the sheet supporting the figure 2 mentioned above and that the insertion spaces EI1 and EI2 represent between the parallel tabs on the figure 2 extend in a direction orthogonal to the plane of the same sheet, as will be explained below in connection with the figure 3 .
  • the central flexible tongue LC is offset at rest in an oblique plane PO relative to the plane P containing the first LL1 and the second LL2 lateral flexible tongue to form, by opposite stress rotation of this tongue LC flexible center, the first insertion space EI1u printed circuit CI between the central flexible tongue LC and the first and second lateral flexible tongue LL1, LL2.
  • the angle of inclination of the oblique plane PO vis-à-vis the aforementioned plane P may be between 10 ° and 20 °, depending on the elastic characteristics of the constituent metal material of the flexible blade LS.
  • the flexible blade LS can thus be clipped at its insertion spaces EI1, EI2 by exerting the opposite stress rotation on the central flexible tongue LC to allow the latter to pass under the printed circuit Cl, the latter entering, by the corresponding edge of the slot F, in the first insertion space EI1, and to make electrical contact with the contact pad verso PV, then, by translation of the blade flexible LS, towards the opposite edge of the slot F, to bring the latter into the second insertion space EI2 and make the electrical contact between the front contact pad PR and the or the lateral flexible tabs LL1, LL2.
  • the central tongue LC makes it possible to ensure the breaking function of the normally closed electrical contact by applying a stress on the fulcrum PA in cooperation with the lateral flexible tongues LLI1 LL2.
  • the flexible blade as shown in Figures 2 and 3 above is advantageously come cutting / stamping a sheet of a conductive material such as a flexible metal such as a copper-beryllium alloy, stainless steel or other.
  • the support point PA formed on the central tongue LC is advantageously formed by a boss, for example.
  • the contact pad PcC of the central flexible tongue LC is formed, for example, by a boss.
  • the contact pads PcL1, PcL2 respectively side tongues LL1 are also formed by a boss, according to the present embodiment.
  • a contact key for flexible membrane keyboard is now described in connection with the figure 4 .
  • the contact key comprises the printed circuit C1 provided with the front contact pad PR and the contact pad verso PV each placed in the vicinity of one of the opposite edges of the slot F formed in the printed circuit.
  • a flexible contact blade LS as described previously in connection with the Figures 2 and 3 , is inserted into the slot F to form the normally closed electrical contact between the front contact pad PR and the contact pad verso PV.
  • the flexible blade has the fulcrum PA for exerting the breaking force of the normally closed electrical contact.
  • the abovementioned fulcrum may be activated by exerting pressure on either a cup C of rounded shape, or on a touch plate PT, disposed above it. The connection between the fulcrum PA and the cup C or the touch pad PT is performed in a conventional manner.
  • the invention relates to the flexible membrane keyboard equipped with a contact button forming a normally closed electrical contact as described in connection with the figure 4 . It is understood in particular that the key shown in the above figure can be integrated to form a flexible keyboard compatible with all types of front face material FA, such as PET, elastomer, PU, PC or other.
  • front face material FA such as PET, elastomer, PU, PC or other.
  • FIG. 5 to 8 an example of electric switch 10 pusher, normally closed type.
  • a switch is for example intended to equip a keyboard portable communication device, including a mobile phone or a portable radio.
  • the switch 10 comprises a printed circuit 12 of generally flat shape, having a first face 12A and a second face 12B opposite the first face 12A.
  • the first face 12A is generally an upper face, intended to be turned towards the outside of the portable communication device. This first face 12A is represented in particular on the figure 5 .
  • the second face 12B is generally a lower face, intended to be turned towards the inside of the portable communication device. This second face 12B is represented in particular on the figure 6 .
  • the printed circuit 12 has a through hole 14, allowing access between the first face 12A and the second face 12B.
  • the orifice 14 has a generally rectangular shape in the plane of the printed circuit 12.
  • the printed circuit comprises, on its first face 12A, a first contact pad 16, also called contact pad.
  • This first contact pad 16 has for example a U-shape, and it is arranged around the orifice 14 so that this orifice 14 is partially framed by this first paddle 16, along the long sides and a first small side of this rectangular orifice 14.
  • the printed circuit 12 comprises, on its second face 12B, a second contact pad 18, also called contact pad, for example of generally rectangular shape.
  • this second contact pad 18 is arranged near a second small side of the rectangular orifice 14.
  • the switch 10 also comprises a conductor 20, in the form of a flexible conductive blade for electrically connecting the first 16 and second 18 contact pads.
  • the conductor 20 comprises a first part 22, in particular represented on the figure 5 cooperating with the first contact pad 16.
  • this first portion 22 comprises two branches 22A, forming lateral tongues, and a base 22B, forming a point of common between these lateral tongues, so as to also have a shape of U.
  • the branches 22A are arranged on either side of the orifice 14 of the printed circuit 12, along its long sides, so that this orifice 14 is partially framed by this first part 22 in the plane of this orifice 14.
  • the conductor 20 further includes a second portion 24 extending between a first end 24A connected to the first portion 22 and a second free end 24B for cooperating with the second contact pad 18.
  • the conductor 20 is sheet metal, the first 22 and second 24 parts being made of materials.
  • the second portion 24 of the conductor forms a lamella (or central flexible tongue) extending the base 22B of the first portion 22, and extending longitudinally between the two branches 22A of the first portion 22.
  • This lamella 24 passes through the orifice 14 so as to electrically connect the first portion 22 with the second contact pad 18.
  • the second part 24 is elastically deformable between a rest position, represented on the figure 7 , in which its second end 24B cooperates with the second contact pad 18, and a biasing position, shown in FIG. figure 8 in which its second end 24B is away from the second contact pad 18.
  • the switch 10 is in the closed position when the second part 24 is in its rest position, and in its open position when this second part 24 is in its biasing position.
  • the second portion 24 comprises, at its second end 24B, a boss 25, also called contact pad, promoting contact with the second pad 18.
  • this conductor 20 can be assembled on the printed circuit 12 by clamping this printed circuit 12 between the first 22 and second 24 parts of the conductor 20.
  • This assembly is particularly stable , thanks to the U-shape of the first part 22. This structure thus facilitates the mounting of the switch 10.
  • the switch 10 also comprises a metal cup 26 of conventional type, forming a pusher, accessible on the side of the first face 12A of the printed circuit 12.
  • This metal cup 26 is arranged above the conductor 20, so that it is susceptible to cooperate with the second portion 24 of this conductor 20.
  • the metal cup 26 is for example arranged in abutment on the first part of the conductor 20.
  • Such a metal cup 26 is likely to be pushed by a user, so as to be elastically deformed between a rest position as shown in FIG. figure 7 , and an engaged position as shown on the figure 8 .
  • the metal cup 26 In its rest position, the metal cup 26 is kept away from the second portion 24 of the driver, which is also in its rest position. The switch 10 is then closed. Note that the height of the metal cup 26 in its rest position is generally about 1 millimeter. So the switch 10 is compact, and can be easily integrated into a compact portable communication device.
  • the metal cup 26 In its engaged position, the metal cup 26 cooperates with the second portion 24 of the driver to maintain it in its biasing position. The switch 10 is then open.
  • the second portion 24 of the conductor 20 comprises a boss 28 forming a fulcrum, provided between its first 24A and second 24B ends, intended to cooperate with the metal cup 26 when the metal cup 26 is in its engaged position.
  • This boss 28 makes it possible to ensure contact between the metal cup 26 and the second portion 24.
  • the metal cup 26 could carry a similar boss intended to cooperate with the second part 24.
  • the metal cup 26 is designed to form a hard point, to provide a tactile sensation to the user when operating the switch 10, by pressing the metal cup 26 with a finger.
  • the switch 10 preferably comprises sealing means (not shown), for example plastic, covering at least the metal cup 26 and the conductor 20. These sealing means may also include, on the user side, an inscription concerning the function of the switch 10.
  • sealing means preferably cover the entire keyboard of the communication apparatus, so that this apparatus can be used in aggressive and humid environments.
  • the switch 10 may also comprise backlighting means, arranged on the side of the second face 12B of the printed circuit 12. Indeed, thanks to the orifice 14, it is possible to backlight the switch 10 in a simple and effective way.
  • the previously described switch 10 has few elements, and therefore has a low weight, as well as a low cost.

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  • Push-Button Switches (AREA)

Claims (10)

  1. Verfahren zur Herstellung einer Folientastatur, die mindestens eine Taste mit normalerweise geschlossenem Kontakt umfasst, wobei dieses Verfahren mindestens darin besteht:
    - die Tastatur mit mindestens einem doppelseitigen gedruckten Schaltkreis (Cl; 12) auszurüsten, der mindestens eine vorderseitige Kontaktstelle (PR; 16) und eine rückseitige Kontaktstelle (PV; 18) umfasst,
    - einen Einführungsschlitze (F; 14) in den gedruckten Schaltkreis zwischen der vorderseitigen Kontaktstelle und der rückseitigen Kontaktstelle (PV; 18) einzuarbeiten,
    - in den Schlitz (F, 14) einen flexiblen leitfähigen Streifen (LS, 20) einzuführen, der einen normalerweise geschlossenen elektrischen Kontakt zwischen der vorderseitigen Kontaktstelle und der rückseitigen Kontaktstelle bildet, wobei der flexible Streifen einen Abstützpunkt (PA; 28) aufweist, der gestattet, eine Kraft zum Trennen des normalerweise geschlossenen elektrischen Kontakts auszuüben,
    gekennzeichnet durch die Tatsache, dass der flexible Streifen (LS; 20) eine flexible Mittelzunge (LC; 24) aufweist, die den Auflagepunkt (PA, 28) umfasst und die elektrisch und mechanisch mit einer ersten und einer zweiten Seitenzunge (LL1, LL2, 22A) über einen gemeinsamen Punkt (PC; 22B) verbunden ist und diesen gegenübersteht, wobei die erste und die zweite Seitenzunge in einer gemeinsamen Ebene angeordnet sind und die Mittelzunge in Position gemäß einer orthogonalen Richtung zu der Ebene (P) versetzt ist, um einen ersten (EI1) und einen zweiten (EI2) Raum zum Einführen des flexiblen Streifens (LS; 20) im Bereich des Schlitzes (F; 14) zu bilden, wobei die Einführoperation mindestens einen Schritt einschließt, der darin besteht, den flexiblen Streifen (LS; 20) in den Schlitz durch Einklipsen des ersten (EI1), respektive des zweiten (EI2) Einführraums an den gegenüberliegenden Rändern des Schlitzes (F; 14) einzuführen, so dass im Ruhezustand die flexible Mittelzunge (LS; 24) und jeweils mindestens eine der ersten und der zweiten Seitenzunge (LL1, LL2; 22A) in elektrischen Kontakt mit der rückseitigen (PV; 18) und respektive vorderseitigen (PR; 16) Kontaktstelle oder umgekehrt gebracht wird.
  2. Verfahren nach Anspruch 1, gekennzeichnet durch die Tatsache, dass der Auflagepunkt (PA, 28), der an der Mittelzunge (LC; 24) angeordnet ist, in entfernter Versetzung an der Mittelzunge gegenüberliegend zum gemeinsamen Punkt (PC; 22B) platziert ist, um einen Kraftübertragungshebel zwischen dem Kontaktpunkt der Mittelzunge (LC; 24) an der rückseitigen oder vorderseitigen Kontaktstelle und dem gemeinsamen Punkt zu bilden.
  3. Flexibler Kontaktstreifen für einen vorderseitigen und rückseitigen gedruckten Schaltkreis, der normalerweise geschlossen ist, gekennzeichnet durch die Tatsache, dass er mindestens aufweist:
    - eine flexible Mittelzunge (LC; 24);
    - eine erste und eine zweite Seitenzunge (LL1, LL2; 22A), die jeweils elektrisch und mechanisch mit der flexiblen Mittelzunge (LC; 24) über einen gemeinsamen Punkt (PC; 22B) verbunden sind und im Wesentlichen in einer selben Ebene, seitlich gegenüberliegend zu der flexiblen Mittelzunge (LC; 24) platziert sind, wobei die erste und die zweite Seitenzunge (LL1, LL2; 22A) in der Position gemäß einer orthogonalen Richtung zu der Ebene versetzt sind, um einen ersten (EI1) und einen zweiten (EI2) Raum zum Einführen des gedruckten Schaltkreises zu bilden, der mit einem Schlitz (F; 14) und mindestens einer vorderseitigen Kontaktstelle (PR; 16) und einer rückseitigen Kontaktstelle (PV; 18) ausgerüstet ist, die in der Nähe von zwei gegenüberliegenden Rändern des Schlitzes (F; 14) angeordnet sind.
  4. Flexibler Kontaktstreifen, der normalerweise geschlossen ist, nach Anspruch 3, dadurch gekennzeichnet, dass der Auflagepunkt (PA; 28) auf der Mittelzunge (LC; 24) durch einen Wulst gebildet wird.
  5. Flexibler Kontaktstreifen, der normalerweise geschlossen ist, nach einem der Ansprüche 3 oder 4, gekennzeichnet durch die Tatsache, dass:
    - die flexible Mittelzunge (LC; 24) eine Kontaktstelle (PcC; 25) aufweist, die durch einen Wulst gebildet wird, und/oder
    - die erste Seitenzunge (LL1) und die zweite Seitenzunge (LL2) jede eine jeweilige Kontaktstelle (PcL1, PcL2) aufweisen, die durch einen Wulst gebildet wird.
  6. Flexibler Kontaktstreifen, der normalerweise geschlossen ist, nach einem der Ansprüche 3 bis 5, gekennzeichnet durch die Tatsache, dass die flexible Mittelzunge (LC; 24) in Ruhestellung in einer Ebene versetzt ist, die schräg in Bezug auf die Ebene angeordnet ist, die die erste und die zweite flexible Seitenzunge (LL1, LL2; 22A) enthält, um durch Zwangsrotation entgegengesetzt zur flexiblen Mittelzunge (LC; 24) den ersten (EI1) und den zweiten (EI2) Raum zum Einführen des gedruckten Schaltkreises (Cl; 12) zwischen der flexiblen Mittelzunge (LC'; 24) und jeweils der ersten und zweiten flexiblen Seitenzunge (LL1, LL2; 22A) zu bilden.
  7. Flexibler Kontaktstreifen, der normalerweise geschlossen ist, nach einem der Ansprüche 3 bis 6, gekennzeichnet durch die Tatsache, dass der Streifen (LS; 20) durch Stanzen/Ziehen eines Blatts aus einem leitenden Material hergestellt ist.
  8. Kontakttaste für eine Folientastatur, gekennzeichnet durch die Tatsache, dass sie mindestens umfasst:
    - einen gedruckten Schaltkreis (Cl; 12), der mit mindestens einer vorderseitigen Kontaktstelle (PR; 16) und einer rückseitigen Kontaktstelle (PV; 18) ausgerüstet ist, die jeweils in der Nähe eines von entgegengesetzten Rändern eines Schlitzes (F; 14) angeordnet sind, der in dem gedruckten Schaltkreis eingearbeitet ist;
    - einen flexiblen Kontaktstreifen (LS; 20) nach einem der Ansprüche 3 bis 7, der in den Schlitz (F; 14) eingeführt ist und einen normalerweise geschlossenen elektrischen Kontakt zwischen der vorderseitigen Kontaktstelle (PR, 16) und der rückseitigen Kontaktstelle (PV; 18) bildet, wobei der flexible Streifen (LS; 20) einen Auflagepunkt (PA; 28) aufweist, der gestattet, eine Kraft zum Trennen des normalerweise geschlossenen elektrischen Kontakts auszuüben.
  9. Kontakttaste für eine Folientastatur nach Anspruch 8, eine Schale (C; 26) oder eine Tastenplatte (PT) aufweisend, die über dem Auflagepunkt (PA; 28) angeordnet ist und die geeignet ist, mit dem Auflagepunkt (PA; 28) zusammenzuarbeiten, um durch Druck auf diese Schale (C; 26) oder diese Tastenplatte (PT) eine Betätigung auszuüben.
  10. Folientastatur, gekennzeichnet durch die Tatsache, dass sie mindestens eine Taste nach einem der Ansprüche 8 oder 9 enthält.
EP11726903.5A 2010-05-26 2011-05-26 Elektrischer zwangsöffner-schalter, im besonderen für eine tragbare kommunikationsvorrichtung Active EP2577700B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11726903T PL2577700T3 (pl) 2010-05-26 2011-05-26 Przełącznik elektryczny, typu normalnie zwartego, zwłaszcza dla przenośnego urządzenia do komunikacji

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1002193A FR2960694B1 (fr) 2010-05-26 2010-05-26 Procede de fabrication d'un clavier souple a membrane et lame souple de contact pour un tel clavier
FR1005040 2010-12-22
PCT/FR2011/051196 WO2011148105A1 (fr) 2010-05-26 2011-05-26 Interrupteur électrique, de type normalement fermé, notamment pour dispositif portable de communication

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EP2577700A1 EP2577700A1 (de) 2013-04-10
EP2577700B1 true EP2577700B1 (de) 2014-03-26

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US (1) US9064652B2 (de)
EP (1) EP2577700B1 (de)
KR (1) KR101814557B1 (de)
CN (1) CN103189949B (de)
BR (1) BR112012030527B8 (de)
ES (1) ES2465290T3 (de)
IL (1) IL223245A (de)
PL (1) PL2577700T3 (de)
WO (1) WO2011148105A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013015174A1 (de) * 2013-09-12 2015-03-12 Kiekert Aktiengesellschaft Mikroschalter zur Positionsbestimmung nebst Verwendung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE658280A (de) * 1964-01-15 1965-04-30
DE2537905C3 (de) * 1975-08-26 1979-10-25 Rudolf Schadow Gmbh, 1000 Berlin Elektrischer Schnappschalter mit einem streifenweise aufgeteilten Blech
US4618754A (en) 1985-06-17 1986-10-21 David Gross Membrane switch with pivotable rocker
US5990772A (en) * 1995-06-02 1999-11-23 Duraswitch Industries, Inc. Pushbutton switch with magnetically coupled armature
US5791459A (en) 1996-02-27 1998-08-11 Molex Incorporated Normally closed electrical switch
US6466118B1 (en) * 2002-04-17 2002-10-15 Duraswitch Industries, Inc. Overlay electrical conductor for a magnetically coupled pushbutton switch
FR2841037B1 (fr) * 2002-06-13 2004-11-26 Itt Mfg Enterprises Inc Commutateur electrique miniaturise a effet tactile du type normalement ferme
US6989728B2 (en) * 2003-10-14 2006-01-24 Duraswitch Industries, Inc. Flexible magnetically coupled pushbutton switch

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IL223245A0 (en) 2013-02-03
US9064652B2 (en) 2015-06-23
KR101814557B1 (ko) 2018-01-04
BR112012030527B1 (pt) 2020-09-29
KR20130120998A (ko) 2013-11-05
CN103189949A (zh) 2013-07-03
IL223245A (en) 2016-03-31
WO2011148105A1 (fr) 2011-12-01
US20130134026A1 (en) 2013-05-30
ES2465290T3 (es) 2014-06-05
BR112012030527B8 (pt) 2020-10-20
PL2577700T3 (pl) 2014-08-29
CN103189949B (zh) 2015-04-29
BR112012030527A2 (pt) 2016-08-09
EP2577700A1 (de) 2013-04-10

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