EP2463882B1 - Gesicherter kompakter Doppelkontakt-Druckknopfschalter - Google Patents

Gesicherter kompakter Doppelkontakt-Druckknopfschalter Download PDF

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Publication number
EP2463882B1
EP2463882B1 EP11192477.5A EP11192477A EP2463882B1 EP 2463882 B1 EP2463882 B1 EP 2463882B1 EP 11192477 A EP11192477 A EP 11192477A EP 2463882 B1 EP2463882 B1 EP 2463882B1
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EP
European Patent Office
Prior art keywords
switching means
dome
upper dome
contact
pushbutton switch
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
EP11192477.5A
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English (en)
French (fr)
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EP2463882A1 (de
Inventor
Jean-Louis Bigand
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Thales SA
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Thales SA
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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
    • H01H13/50—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
    • H01H13/64—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 wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
    • 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
    • H01H13/14—Operating parts, e.g. push-button
    • 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
    • H01H13/64—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 wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
    • H01H13/66—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 wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches the operating member having only two positions
    • 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
    • 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
    • H01H13/803—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 switching function thereof, e.g. normally closed contacts or consecutive operation of contacts
    • 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
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H2001/0005—Redundant contact pairs in one switch for safety reasons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/038—Form of contacts to solve particular problems to be bridged by a dome shaped contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H01H2221/026—Guiding or lubricating nylon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/002—Switch site location superimposed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/008—Two different sites for one circuit, e.g. for safety
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/018—Consecutive operations

Definitions

  • the present invention relates to a compact dual-contact secure push switch. It applies in particular to the field of single-function push-button electrical switches, or redundant or secure function, for the engagement of critical functions, for example used in the aeronautical field.
  • Push switches type “dome” switches sometimes referred to in English terminology “dome switches” are particularly commonly used in aircraft dashboards.
  • the electrical switching is effected by the collapse or “deflection” of a conductive elastic blistering dome against two conductors to be connected.
  • Dome switches are not intrinsically equipped with systems to provide electrical redundancy; however, there are known solutions of the art, secure dome switches.
  • a switch allows by a mechanical action, the activation of two electrical contacts positioned next to each other and activated by the same surface of the switch.
  • the assembly can form a push switch that can be reported for example on the front of a dashboard, for example by welding.
  • a disadvantage of this technical solution lies in the fact that the realization of such a switch is difficult, insofar as the two electrical contacts must be activated simultaneously.
  • the simultaneous activation of the two electrical contacts is all the more delicate when the pressing of the switch of the switch is operated on the edges or the stop thereof. Indeed, in such a case, it is possible that only one contact on both is done. It is possible to overcome this disadvantage by equipping the switch with precise guiding devices, to the detriment of the cost of manufacture, and at the cost of parasitic friction affecting comfort for the user.
  • the guiding systems may cause switch blocking problems, for example due to bracing phenomena.
  • the document FR 2 859 567 A1 discloses a push switch comprising a plunger (9) causing, under the action of a pressure by a user, the depression of an upper dome (5) disposed above switching means (3), the ridge the upper dome (5) and the switching means (3) having a low position, a first electrical contact being made between a primary contact (34) and a secondary contact (31) of the upper dome (5) forming a first electrical circuit when the peak of the upper dome (5) is in the low position, and a second electrical contact being made between a primary contact (27) and a secondary contact (also 31) switching means (3) forming a second electrical circuit when the switching means (3) are in the low position.
  • An object of the present invention is to overcome at least the aforementioned drawbacks, by providing a secure pusher switch of compact structure, and providing improved comfort of use.
  • An advantage of the invention lies in the fact that the practical realization of a switch according to one of the embodiments described, has a reasonable cost.
  • Another advantage of the invention lies in the fact that a switch according to one of the described embodiments offers improved reliability, reliability and service life.
  • the subject of the invention is a switch according to claim 1.
  • the switching means may be formed by a lower dome.
  • the switching means may be formed by a flexible metal strip.
  • said first and second electrical circuits may not have an electric common mode.
  • said first and second electrical circuits can ensure the activation of a redundant or secure function.
  • the pusher switch may comprise an intermediate movable part disposed below the upper dome and above the switching means, the intermediate mobile part being electrically conductive at least in its upper part, and connected electrically to the secondary contact of the upper dome, the collapse of the upper dome causing the closing of said first electrical circuit, and the depression of the switching means being driven by the displacement of the intermediate movable part, the upper surface of the lower dome and / or the lower surface of the intermediate movable part being electrically insulating.
  • the intermediate movable part may be disposed on a flexible and electrically conductive beam, the beam being fixed at at least one point of the secondary contact of the upper dome by fixing means.
  • said primary contact and / or the secondary contact of the upper dome, and / or the primary contact and / or the secondary contact of the switching means can be formed by metallizations carried out on a card of circuit board or encapsulated metal strips.
  • the push switch according to one of the embodiments of the invention can be directly attached to a printed circuit board.
  • the push-button switch according to one of the embodiments of the invention may be placed in a box that can be attached to a dashboard.
  • a push switch 1 may comprise, in an exemplary embodiment, an actuator or “plunger” 10.
  • the plunger 10 is disposed above the ridge of an upper dome 11 made of an electrically conductive material.
  • Switching means for example formed by a lower dome 12, are arranged below the upper dome 11.
  • the upper dome 11 comprises in particular a lower surface 11a and an upper surface 11b.
  • the lower dome 12 comprises a lower surface 12a and an upper surface 12b.
  • the diameter of the upper dome 11 is chosen larger than the diameter of the lower dome 12.
  • the collapse of the upper dome 11 must systematically cause the collapse of the lower dome 12, so that that the same activation force exerted by the user on the plunger 10, allows the collapse of the two domes 11, 12.
  • the effort required for the collapse of the upper dome 11 is greater than the effort required for the collapse of the lower dome 12.
  • An intermediate movable part 13 is arranged between the upper dome 11 and the lower dome 12.
  • the plunger 10 and the domes 11, 12 may for example be symmetrical about a vertical axis, the plunger 10 being for example disposed in a cage not shown in the figure, limiting its movements to a degree of freedom in the direction of the vertical axis.
  • the plunger 10, the domes 11, 12 and the intermediate movable part 13 have main axes aligned with the aforementioned vertical axis.
  • the plunger 10 may be made of an elastomer-type material whose characteristics provide a good comfort for a user exerting pressure on it, and may for example be covered with a flexible cover made of an elastomeric material, or a rigid cover, not shown in the figures.
  • the upper dome 11 rests on a primary contact 111 and is in electrical contact with the latter.
  • the contact primary 111 may for example be formed by a metal track of a printed circuit board. At rest, that is to say in the absence of force exerted on it, the peak of the upper dome 11 occupies a nominal position called "high".
  • the lower dome 12 rests on a primary contact 121 and is in electrical contact with the latter, which may for example also be formed by a metal track of a printed circuit board.
  • a primary contact 121 When an appropriate pressure is exerted on the lower dome 12, the ridge thereof comes, after deflection, in contact with a secondary contact 122 of the lower dome 12.
  • the lower surface 12a of the lower dome 12 is electrically conductive.
  • the electrical contact is established between the primary contact 121 and the secondary contact 122 of the lower dome 12.
  • the primary contact 121 and the secondary contact 122 of the lower dome 12 are substantially in the same plane, and may for example both be formed by metallizations formed on a printed circuit board.
  • the deflection of the lower dome 12 is effected by the displacement of the intermediate movable part 13.
  • the displacement of the intermediate movable part 13 is caused by the deflection of the upper dome 11, itself caused by the pressure by a user of the plunger 10.
  • the peak of the upper dome 11 occupies in the absence of forces exerted on the plunger 10, a so-called "high" nominal position, and a low position after deflection. Also, the lower surface 11a of the upper dome 11 is electrically conductive.
  • the intermediate movable part 13 is made of an electrically conductive material, at least in its upper part.
  • the intermediate movable part 13 is electrically connected to the secondary contact 112 of the upper dome 11.
  • the intermediate movable part 13 can be physically and electrically connected to the secondary contact 112 of the upper dome 11 via a beam 130 made of a conductive material, for example a metal leaf spring traversed by the workpiece Intermediate mobile 13.
  • the beam 130 must be designed to generate a minimum of disruptive efforts when it deforms.
  • the beam 130 may be attached to the secondary contact 112 of the upper dome, at one or a plurality of points, for example by welding, or by screwing, crimping or any other known means of attachment.
  • the intermediate movable part 13 is shown encased in the beam 130, and therefore the intermediate movable part 13 is not in direct contact, when the upper dome 11 is depressed, with the lower surface 11a of the upper dome 11.
  • the intermediate movable part 13 can be made entirely of an electrically insulating material, and it is the beam 130 which ensures the electrical contact between the primary contact 111 and the secondary contact 112 when the lower surface 11a of the upper dome 11 is in contact with the beam 130; it is then not necessary that the upper surface 12b of the lower dome 12 is electrically insulating.
  • the intermediate movable part 13 may for example be entirely electrically conductive, and for example protrude from either side of the beam 130 and then be directly in contact at its upper part, with the lower surface. 11a of the upper dome 11, when the upper dome 11 is depressed; in such a case it is necessary that the lower part of the intermediate movable part 13 and / or the upper surface 12b of the lower dome 12 is electrically insulating, for example by being covered with an insulating film.
  • the intermediate movable part 13 is mechanically independent of the upper and lower domes 11 and 11.
  • the intermediate movable part 13 also has the advantage of forming a suitable actuator for the smaller diameter of the lower dome. 12, that is to say an actuator whose dimensions can be chosen to be compatible with the dimensions of the lower dome 12. In this way, it is possible to ensure a longer service life of the dome of smaller diameter.
  • the upper surface 12b of the lower dome 12 and / or the lower surface of the intermediate movable part 13 may for example be covered with an electrically insulating material, formed for example by a layer of varnish or an insulating film or by adding a piece made of a plastic material.
  • the elements forming the chain comprising in particular: upper dome 11, intermediate movable part 13, lower dome 12 and secondary contact 122 of the dome lower 12 are not in direct contact with each other.
  • the upper and lower domes 11, 12 are after deflection in their respective lower positions, all the aforementioned elements are in contact with each other, and the first and second aforementioned electrical circuits are then closed .
  • the displacement of the plunger 10 then imposes, via the intermediate elements situated between the latter and the lower dome 12, a displacement of the ridge of the lower dome 12 until it reaches a stop, where the electrical contact between the surface lower 12a of the lower dome 12 and the secondary contact 122 of the lower dome 12 is established, that is to say, where the second electrical circuit is closed, as illustrated by the figure 1f .
  • the dimensioning of the upper and lower domes 11, 12, of the intermediate movable part 13, the configuration and the characteristics of the aforementioned elements, are defined so that the deflection of the upper dome 11 causes the deflection of the lower dome 12, and that the closing of the two aforementioned electrical circuits is carried out simultaneously or quasi-simultaneous, typically in an interval of the order of a microsecond, corresponding to the sequence of configurations described above and illustrated by the Figures 1a to 1f .
  • the stroke-effort characteristics of the domes 11, 12 are defined so that the tactile sensation of the user is similar to the sensation provided by the pressure of a simple switch of the conventional type.
  • the effort required by the user to cause the collapse of the two domes 11, 12 may advantageously be at most equal to the effort required for the collapse of the upper dome 11 alone.
  • switching means of the lower electric circuit are formed by the lower dome 12.
  • the switching means of the lower circuit can also be formed by alternative devices, and the lower dome 12 can thus for example be substituted by a flexible metal strip, having a position in which the latter does not come into contact with the secondary contact 122, and a position which can be assimilated to a collapsed position of the lower dome 12, in which the leaflet is in contact with the secondary contact 122, the second electric circuit being thus closed.
  • a flexible metal strip having a position in which the latter does not come into contact with the secondary contact 122, and a position which can be assimilated to a collapsed position of the lower dome 12, in which the leaflet is in contact with the secondary contact 122, the second electric circuit being thus closed.
  • the figure 2 presents curves illustrating stress curves relative to a push switch according to one embodiment of the invention.
  • a first force curve 21 represents the force applied to the ridge of the upper dome 11, as a function of the stroke thereof, from its high position to its low position.
  • a second force curve 22 represents the force applied to the ridge of the lower dome 12, as a function of the stroke thereof, from its high position to its low position.
  • the effort to be exerted by the user is increasing as soon as the depression of the upper dome is initiated, to a point illustrated by the top of the first stress curve 21, corresponding to the overturning of the upper dome. From the turning point, the force decreases until the complete deflection of the upper dome, corresponding to a point of mechanical stop and electrical connection.
  • the shape of the first force curve 21 is substantially symmetrical around the vertical axis passing through the turning point.
  • the force exerted on the lower dome increases as soon as the depression of the lower dome is initiated, until at a point illustrated by the top of the second force curve 22, corresponding to the inversion of the lower dome. From the turning point, the force decreases until the complete deflection of the lower dome, corresponding to a point of mechanical stop and electrical connection.
  • the shape of the second force curve 22 is substantially symmetrical about the vertical axis passing through the turning point.
  • the depression of the lower dome is initiated after the overturning of the upper dome.
  • the effort to be exerted over the entire stroke of the latter until electrical switching of the two electrical circuits is equal to the sum of the forces applying to the two domes .
  • the plunger is formed by a material having a relative elasticity, the reaction to the effort exerted by the user for switching purposes is perceived almost continuously, because of the elastic characteristics of the material forming the plunger on the one hand, and elastic characteristics of the end of the finger of the user exerting the pressure force.
  • the elastomeric plunger erases the tactile discontinuity of the lower dome 12 by restoring the energy stored during its compression during the rise phase of the effort.
  • the figure 3a presents the stroke-effort curve relative to an example of practical realization of the upper dome.
  • the force exerted on the dome increases continuously with the course of the ridge thereof, up to a first characteristic point 31 corresponding to the upturn of the upper dome. From the first characteristic point 31, the force decreases continuously with the stroke, to a second characteristic point 32, corresponding to a mechanical stop, and to the electrical switching.
  • the figure 3b presents the stroke-effort curve relative to an example of practical realization of the lower dome.
  • the curve has a similar appearance to the curve relating to the upper dome described with reference to the figure 3a ; however, the races and the efforts are significantly less.
  • the stroke-effort curve relative to the lower dome has a first characteristic point 41 corresponding to the inversion of the lower dome, and a second characteristic point 42 corresponding to the mechanical stop and the electrical switching provided by the lower dome.
  • the figure 3c presents the stroke-effort curve relative to a practical embodiment of the upper dome disposed above the lower dome via an intermediate movable part.
  • the shape of the stroke-effort curve is identical to the stroke-effort curve of the upper dome alone.
  • the stroke-effort curve then represents the superposition of the two curves illustrated with reference to the figures 3a and 3b .
  • the effort decreases as the stroke increases, to a break point 52 corresponding to the total collapse of the upper dome. From the point of break 52, the force increases slightly with the race to a turning point 53 of the lower dome. Then the force decreases when the stroke increases, to a point of mechanical stop and electrical contact 54.
  • the figure 3d presents the stroke-effort curve relative to a practical embodiment of the upper dome disposed above the lower dome via the intermediate mobile part in a configuration identical to the configuration illustrated by the curves of the figure 3c in the presence of an elastomeric plunger.
  • the stroke-effort curve then has a look similar to the race-effort curve illustrated by the figure 3c .
  • the use of the elastomeric plunger makes it possible to "erase” the discontinuities, and to offer the user a tactile sensation similar to the tactile sensation caused by an action on a single dome switch.
  • the stroke-stress curve has indeed an increasing pace up to a turning point 61 corresponding to the upturn of the upper dome, then a decreasing speed to a point of mechanical stop and electrical contact 62.
  • the figure 4 shows a sectional view illustrating an example of a push-switch according to an alternative embodiment of the invention in which the lower dome is substituted by a flexible metal strip 42.
  • the example illustrated by FIG. figure 4 corresponds to a configuration of the switch 1 similar to the configuration described above with reference to the figure 1f that is, a configuration in which the first and second electrical circuits are closed.
  • the plunger 10, the upper dome 11 comprising a lower surface 11a and an upper surface 11b, the primary contact 111, the intermediate movable part 13, the primary contact 121 and the secondary contact 122 can be configured in a manner similar to the example described with reference to Figures 1a to 1f .
  • the lower dome may be replaced by a flexible metal strip 42, one end of which may for example be attached to a portion of the primary contact 121, by fastening means 421 such as a screw or a weld spot, or any other means known fastening, the other end of the flexible metal strip 42 resting for example on another part of the primary contact 121.
  • the blade 42 is in a low position comparable to the collapsed position of the lower dome, and its central portion is in contact with the secondary contact 122, thus ensuring the closure of the second electrical circuit.
  • the upper dome 11 and the lamella 42 are configured so that the force required for the collapse of the upper dome 11 is greater than the effort required for the collapse of the lamella 42.

Landscapes

  • Push-Button Switches (AREA)

Claims (11)

  1. Druckknopfschalter (1), aufweisend einen Stößel (10), der unter der Einwirkung eines Drucks durch einen Benutzer das Eindrücken einer oberen Kuppe (11) herbeiführt, die über Schaltmitteln (12, 42) angeordnet ist, wobei jedes Eindrücken der oberen Kuppe (11) obligatorisch das Absenken der Schaltmittel (12, 42) herbeiführt, wobei der Scheitelpunkt der oberen Kuppe und die Schaltmittel (12, 42) eine untere Position aufweisen, wobei ein erster elektrischer Kontakt zwischen einem primären Kontakt (111) und einem sekundären Kontakt (112) der oberen Kuppe (11) realisiert wird, die einen ersten elektrischen Schaltkreis ausbilden, wenn sich der Scheitelpunkt der oberen Kuppe (11) in unterer Position befindet, und wobei ein zweiter elektrischer Kontakt zwischen einem primären Kontakt (121) und einem sekundären Kontakt (122) der Schaltmittel (12, 42) realisiert wird, die einen zweiten elektrischen Schaltkreis ausbilden, wenn sich die Schaltmittel (12, 42) in unterer Position befinden, dadurch gekennzeichnet, dass die obere Kuppe (11) und die Schaltmittel (12, 42) so ausgelegt sind, dass der Kraftaufwand, der zum Absenken der oberen Kuppe (11) erforderlich ist, höher ist als der Kraftaufwand, der zum Absenken der Schaltmittel (12, 42) erforderlich ist, und dadurch, dass die obere Kuppe (11) und die Schaltmittel (12, 42) so ausgelegt sind, dass das Eindrücken der Schaltmittel (12, 42) nach dem Zurückkehren der oberen Kuppe (11) initiiert wird, wobei die Merkmale von Hub-Kraftaufwand für die obere Kuppe (11) und die Schaltmittel (12, 42) das Absenken der oberen Kuppe (11) und der Schaltmittel (12, 42) mit einem Kraftaufwand gestatten, der höchstens dem Kraftaufwand entspricht, der allein für das Absenden der oberen Kuppe (11) erforderlich ist.
  2. Druckknopfschalter (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Schaltmittel (12, 42) durch eine untere Kuppe (12) ausgebildet werden.
  3. Druckknopfschalter (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Schaltmittel (12, 42) durch eine flexible Metalllamelle (42) ausgebildet werden.
  4. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, in dem der Stößel (10) aus einem Material des Typs Elastomer ausgeführt ist, und in dem der Stößel (10) so ausgebildet ist, dass eine Hub-Kraftaufwand-Kurve einen zunehmenden Verlauf bis zu einem Kipppunkt (61), welcher der Rückkehr der oberen Kuppe (11) entspricht, und anschließend einen abnehmenden Verlauf bis zu einem mechanischen Anschlag- und einem elektrischen Kontaktpunkt (62) der Schaltmittel (12, 42) aufweist.
  5. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, wobei die ersten und zweiten elektrischen Schaltkreise keinen elektrischen Gleichtakt aufweisen.
  6. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, wobei die ersten und zweiten elektrischen Schaltkreise die Aktivierung einer redundanten oder gesicherten Funktion sicherstellen.
  7. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, aufweisend ein bewegliches Zwischenstück (13), das unter der oberen Kuppe (11) und über den Schaltmitteln (12, 42) angeordnet ist, wobei das mobile Zwischenstück (13) zumindest in seinem oberen Teil elektrisch leitend ist und elektrisch mit dem sekundären Kontakt (112) der oberen Kuppe (11) verbunden ist, wobei das Absenken der oberen Kuppe (11) das Schließen des ersten elektrischen Schaltkreises herbeiführt, und wobei das Eindrücken der Schaltmittel (12, 42) durch die Verschiebung des beweglichen Zwischenstücks (13) herbeigeführt wird, wobei die Oberseite (12b) der unteren Kuppe und/oder die Unterseite des beweglichen Zwischenstücks (13) elektrisch isolierend ist/sind.
  8. Druckknopfschalter (1) nach Anspruch 6, in dem das bewegliche Zwischenstück (13) auf einem flexiblen und elektrisch leitenden Träger (130) angeordnet ist, wobei der Träger zumindest an einem Punkt des sekundären Kontakts (112) der oberen Kuppe (11) mit Befestigungsmitteln fixiert ist.
  9. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, in dem der primäre Kontakt (111) und/oder der sekundäre Kontakt (112) der oberen Kuppe (11) und/oder der primäre Kontakt (121) und/oder der sekundäre Kontakt (122) der Schaltmittel (12, 42) durch Metallisierungen ausgebildet ist/sind, die auf einer Leiterplatine oder durch eingekapselte Metalllamellen ausgebildet sind.
  10. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, fähig, um direkt auf einer gedruckten Schaltung angebracht zu werden.
  11. Druckknopfschalter (1) nach einem der vorhergehenden Ansprüche, angeordnet n einem Gehäuse, fähig, um auf einem Armaturenbrett angebracht zu werden.
EP11192477.5A 2010-12-10 2011-12-07 Gesicherter kompakter Doppelkontakt-Druckknopfschalter Active EP2463882B1 (de)

Applications Claiming Priority (1)

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FR1004818A FR2968826B1 (fr) 2010-12-10 2010-12-10 Commutateur a poussoir securise compact a double dome

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EP2463882B1 true EP2463882B1 (de) 2018-10-31

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EP (1) EP2463882B1 (de)
CN (1) CN102543534B (de)
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RU2615975C2 (ru) 2017-04-12
US20120305372A1 (en) 2012-12-06
CN102543534B (zh) 2017-03-01
CN102543534A (zh) 2012-07-04
US8735747B2 (en) 2014-05-27
ES2707788T3 (es) 2019-04-05
CA2761450A1 (en) 2012-06-10
EP2463882A1 (de) 2012-06-13
FR2968826A1 (fr) 2012-06-15
FR2968826B1 (fr) 2012-12-07
RU2011150217A (ru) 2013-06-20
CA2761450C (en) 2019-05-28

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