EP2478542A1 - Touch-sensitive switch - Google Patents

Touch-sensitive switch

Info

Publication number
EP2478542A1
EP2478542A1 EP10754478A EP10754478A EP2478542A1 EP 2478542 A1 EP2478542 A1 EP 2478542A1 EP 10754478 A EP10754478 A EP 10754478A EP 10754478 A EP10754478 A EP 10754478A EP 2478542 A1 EP2478542 A1 EP 2478542A1
Authority
EP
European Patent Office
Prior art keywords
switch
dome
disk
switch according
spacer
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.)
Withdrawn
Application number
EP10754478A
Other languages
German (de)
French (fr)
Inventor
David Zieder
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.)
Nicomatic SA
Original Assignee
Nicomatic SA
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 Nicomatic SA filed Critical Nicomatic SA
Publication of EP2478542A1 publication Critical patent/EP2478542A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/26Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches 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
    • H01H13/78Switches 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
    • H01H13/79Switches 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 form of the contacts, e.g. interspersed fingers or helical networks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches 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
    • H01H13/84Switches 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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85Switches 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 ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00Layers
    • H01H2209/046Properties of the spacer
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00Venting
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00Tactile feedback
    • H01H2215/004Collapsible dome or bubble
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00Facilitation of operation; Human engineering
    • H01H2217/024Profile on actuator
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/05Force concentrator; Actuating dimple
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00Actuators
    • H01H2221/08Actuators composed of different parts
    • H01H2221/082Superimposed actuators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00Dimensions; Characteristics
    • H01H2227/036Minimise height
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00Applications
    • H01H2231/05Card, e.g. credit card

Definitions

  • the invention relates to a touch-sensitive switch.
  • a touch-sensitive switch comprises two conductive members between which electrical continuity is established when the switch is subjected to mechanical activation, for example by one or more fingers of a user, and the switch transmits a tactile feedback. to this user.
  • the touch-sensitive switches must meet certain dimensional constraints and be smaller and smaller to have a small footprint.
  • the touch-sensitive switches must have a small thickness of the order of 0.4 mm.
  • the invention therefore aims to overcome this disadvantage of the prior art by providing a touch-sensitive switch of small thickness while ensuring a sufficient tactile feedback to the user.
  • the subject of the invention is a touch-sensitive switch characterized in that it comprises at least one dome, at least one disc and at least one insulator disposed between said dome and said disc, so that the peripheral parts said dome and said disk are each in contact with a face of said insulator and are thus facing either side of said insulator, said insulator having a central orifice so as to allow contact between said dome and said disk when are subject to a mutual ratment force.
  • said switch ensures a tactile feedback and has a small thickness to integrate easily in or on thin media without increasing the size.
  • Said switch may further comprise one or more of the following features, taken separately or in combination:
  • said switch comprises a spacer configured to be arranged between said switch and a support of said switch, to improve the operation of said switch,
  • the spacer is an insulating spacer
  • said switch has two connecting members respectively configured to cooperate with an associated connection pad of the support of said switch,
  • the spacer is a conductive spacer, which simplifies the connection between said switch and the support of said switch,
  • said switch has a single connection element configured to cooperate with an associated connection pad of the support of said switch
  • the spacer is formed by an adhesive so as to be able to set up said switch simply and rapidly on the support of said switch,
  • the spacer has an annular shape making it possible to increase the compression volume, which improves the haptic feedback
  • said switch has at least one communication orifice between a first compression chamber defined inside said dome and said disc, and the outside of the first compression chamber,
  • the spacer defines with said disk a second compression chamber and said communication orifice is formed on said disk, so that the first compression chamber communicates with the second compression chamber,
  • said communication orifice is formed on said insulator
  • said communication orifice is formed on said dome
  • said switch comprises an actuation surface formed on said dome which guarantees a good activation of said switch
  • said switch comprises a cover provided with an actuating surface and disposed on said dome to protect said switch and guarantee a good activation of said switch,
  • the actuating surface is in the form of a protuberance, the actuating surface is made in the form of a depression,
  • said dome and said disk are metallic so as to ensure electrical contact when said dome and said disk are brought into contact by the activation of said switch
  • said dome and said disk are made of plastics material and respectively have a conductive covering on the faces of said dome and said disk vis-à-vis to allow electrical contact between said dome and said disk when said switch is activated.
  • FIG. 1a is a perspective view of a thin printed circuit portion provided with a touch-effect switch
  • FIG. 1b is a perspective view of a thin printed circuit portion and a touch-sensitive switch mounted on the surface of the printed circuit
  • FIG. 2 is a sectional view of the touch-effect switch according to a first embodiment
  • FIG. 3 is an exploded view of the touch-effect switch
  • FIG. 4 is a diagrammatic representation of the dome and the disk of the touch-sensitive switch made of plastic prior to assembly
  • FIG. 5 is a bottom view of the touch-sensitive switch
  • FIG. 6 is a sectional view of a touch-sensitive switch having a communication port on the disc
  • FIG. 7 is an exploded view of a touch-sensitive switch having a communication orifice on the insulator
  • FIG. 8a is a sectional view of a touch-sensitive switch having an actuating surface in the form of a protuberance on the dome,
  • FIG. 8b is a sectional view of a touch-sensitive switch having an actuating surface in the form of a depression on the dome,
  • FIG. 8c is a sectional view of a touch-sensitive switch presenting a covering provided with an actuating surface and arranged on the dome,
  • FIG. 9 is a perspective view of a thin printed circuit portion and a touch-sensitive switch according to a second embodiment mounted on the surface of the printed circuit, and
  • FIG. 10 is a sectional view of a touch effect switch according to a third embodiment.
  • FIG. 9, respectively of FIG. 10, corresponding to the elements of FIGS. 1a-8c, bear the same references preceded by the one hundred 1, respectively of the one hundred two. As a result, these elements will not be described again.
  • FIGS. 1a to 2 represent a touch-sensitive switch 1 according to the invention, mounted on a thin printed circuit 3, that is to say of small thickness (of the order of a tenth of a millimeter), for example of a smart card .
  • This printed circuit 3 may be a relatively flexible circuit. By flexible means, the property of partially or totally lose and resume its volume or shape following compression.
  • FIG. 1a there is shown such a switch 1 mounted in a housing 5, having for example a circular orifice, of the printed circuit 3.
  • This switch 1 is intended to be activated by pressing each side of the switch 1, so as to "Pinch” switch 1, we speak of "pinching" in English.
  • This switch 1 may be surrounded by protective walls arranged facing the dome 7 and the disk 11. These protective layers are flexible so as to allow the activation of the switch 1 by pinching for example between two fingers.
  • Figure lb shows an alternative in which the switch 1 is mounted on the surface of the circuit 3, it is referred to surface mounted component CMS or SMT in English for "Surface Mounted Technology".
  • the circuit 3 can also be relatively flexible.
  • the switch 1 comprises: a dome 7 having a slight bulge and a continuous circular peripheral portion 9,
  • the diameter of the dome 7 and the disk 11 is for example 8 mm. Diameters of 4 to 20 mm may alternatively be used for the dome 7 and the disk 11.
  • the dome 7 and the disk 11 may have a thickness of a few tens of micrometers.
  • Such a switch 1 of small thickness can easily be surrounded for example by a sealing gel to seal in a simple manner without increasing the size.
  • the interior space between the dome 7 and the disk 1 1 defines a first compression chamber C1 allowing haptic feedback when the switch 1 is activated.
  • the dome 7 has a connection member 15, here a connecting lug 15 which radially protrudes from its periphery 9 to be in contact with an associated connection pad 17 of the printed circuit 3 (FIGS. 3).
  • the disc January 1 has a connection member 19, here a connecting tab 19 which protrudes radially from the disc 11 to be in contact with an associated connection pad 21 of the printed circuit board 3.
  • the printed circuit 3 has tracks which respectively form the connection pads 17 and 21 arranged on either side of the switch 1.
  • the connecting members 15 and 19 are substantially aligned.
  • the connecting members 15 and 19 may form a predetermined angle.
  • connection pads 17 and 21 are formed on tongues 23, 24 arranged around the circular orifice of the housing 5.
  • connection members 15 and 19 may respectively be brought into contact with the connection pads 17 and 21 by welding.
  • the organs of connection 15 and 19 have for example a hole (not shown) for welding housing.
  • the connecting members 15 and 19 can be crimped onto the connection pads 17 and 21.
  • the connecting members 15 and 19 respectively have pins for piercing the connection pads 17 and 21 and crimped on these connection pads 17 and 21 for example with the aid of a specific clamp.
  • connection members 15 and 19 may be provided on the connection members 15 and 19 for faster positioning and connection, in particular when the switch 1 is put in place by a "pick and place” type machine. in English to take and place.
  • connection members 15 and 19 Provision could also be made for the connection members 15 and 19 to have terminations of generally tubular shape complementary to a connection cable connected to the printed circuit board 3.
  • the dome 7 and the disk 11 are metallic.
  • the dome 7 and the disc 11 are made of plastic and have a conductive coating.
  • tracks 25 and 26 are screen printed on a polycarbonate film or polyethylene terephthalate (PET) film, for example using a conductive ink.
  • PET polyethylene terephthalate
  • a dome shape is used to form the dome 7 of the switch 1 by means of a mold heated for example at 150 ° C., with a connection member 15 connected to the track 25, and on the other hand a flat disc shape for forming the disc 11 of the switch 1 with a connecting member 17 connected to the track 26.
  • the tracks 25 and 26 then form a conductive covering of the faces of the dome 7 and the disk 11 vis-à-vis. When the switch is activated and these faces are brought into contact, an electrical contact is then established between the dome 7 and the disk 11.
  • the dome 7 and the disk 11 are then folded and assembled with the interposition of the insulation 13 between them for example by gluing.
  • the insulator 13 has a sufficiently large central orifice 27 that when pressure is exerted by pinching the switch 1 or by pressing the switch 1, the top of the dome 7 and the disc 11 are brought together through this orifice 27 and brought into electrical contact.
  • the switch 1 When the switch 1 is released, it returns to the rest position in which the dome 7 and the disk 11 are distant so that there is no more electrical contact between the dome 7 and the disk 11.
  • the stroke between this rest position and the active position obtained by contact of the dome 7 and the disk 11 is of the order of 0.17 mm.
  • the insulator 13 may be formed of an insulating adhesive ring placed between the dome 7 and the disk 11, with a sufficient thickness to ensure the isolation, so that the total thickness of the switch is of the order of 0 , 4 mm.
  • a non-conductive spacer 29 disposed between the disk 1 1 and the printed circuit 3 ( Figure 2).
  • the spacer 29 then defines a second compression chamber C2 with the disk 11.
  • This spacer 29 may be a flexible spacer.
  • This spacer 29 is for example formed by glue for faster implementation of the switch 1 on the printed circuit 3 and which also provides a sealing function.
  • the spacer 29 has an annular shape.
  • This annular shape of the spacer 29 makes it possible to increase the compression volume of the switch 1, and thus to improve the haptic feedback.
  • Other forms for the spacer 29 may be envisaged.
  • the inner space and the outer space being at the same pressure, to allow the operation of the switch 1, the latter can be made under vacuum.
  • the interior space of the switch 1 is connected to the space outside the switch 1, by a communication orifice formed for example by a hole 31 on the disc 1 1 so that that the first compression chamber C 1 communicates with the second compression chamber C2 or formed on the dome 7 according to a variant not shown.
  • the communication orifice is formed by a channel 32 on the insulator 13, preferably in an inclined direction with respect to a radial direction.
  • the interior space contains air or a gas at atmospheric pressure or at a higher pressure, and is not connected to the outside. Thus, when closing the switch, compression of the gas placed inside increases the required pressure force.
  • the switch 1 may furthermore have an actuating surface 33 for improving the haptic feedback (see FIGS. 8a to 8c).
  • This actuating surface 33 can be formed directly on the dome 7
  • the actuating surface 33 may form a protuberance or pin (FIGS. 8a, 8c) or alternatively a recess (FIG. 8b).
  • switches 1 thus formed can be packaged in strips to further improve the speed of placement of the switches 1 on the printed circuits 3.
  • the switches 1 are held on a silicone film by an adhesive, and the film silicone has guide holes.
  • a second embodiment illustrated in FIG. 9 differs from the first embodiment in that the spacer 129 is conductive.
  • connection member 115 here a connection lug 115 which protrudes radially from its periphery 109 so as to be in contact with an associated connection pad 117 of the printed circuit 103.
  • connection member it is no longer necessary for the disk to have a connection member to be in contact with an associated connection pad 121 of the printed circuit board 103.
  • the spacer 129 connects the disk to the connection pad 121 without the need for soldering or other connection means.
  • a third embodiment illustrated in FIG. 10 differs from the first and second embodiments in that the switch 201 has several layers. Indeed, the switch 201 comprises:
  • a first 207a and a second 207b domes each having a slight bulge, a flat disc 211 without a bulge,
  • first insulator 213a interposed between the disk 211 and the first dome 207a
  • second insulator 213b interposed between the disk 211 and the second dome 207b.
  • the switch 201 may have an actuating surface on one of the domes 207a or 207b or on the two domes 207a and 207b.
  • the switch 201 may have a spacer 229 facing the second dome 207b to be disposed on the printed circuit.
  • This spacer 229 may be non-conductive according to the first embodiment or conductor according to the second embodiment.
  • the spacer 229 is conductive
  • the first dome 207a and the disk 211 have connecting members to associated connection pads of the printed circuit, the second dome 207b being connected to the printed circuit board via the conductive spacer 229.
  • the switch 201 when the switch 201 is subjected to a first pressure, the first dome 207a is brought into contact with the disk 211 and when the switch 201 is subjected to a second pressure greater than the first one. pressure it is the second dome 207b which is brought into contact with the flat disk 211.
  • a switch 201 with more than two layers can be provided using several domes 207a, 207b and several disks 211.
  • a thin switch can be easily integrated into a printed circuit, for example a thin card, such as a bank card while ensuring a tactile feedback to the user when the switch is activated. .
  • Another example of an application is intelligent clothing, that is to say a clothing incorporating such a switch for example for the control of a portable player.

Landscapes

  • Push-Button Switches (AREA)

Abstract

The invention relates to a touch-sensitive switch, characterized in that it includes at least one dome (7, 107, 207a, 207b), at least one disk (11), and at least one insulator (13, 213a, 213b) arranged between said dome (7, 107, 207a, 207b) and said disk (11), such that the peripheral portions of said dome (7, 107, 207a, 207b) and said disk (11) are each in contact with a surface of said insulator (13, 213a, 213b), said insulator (13, 213a, 213b) having a central opening (27) so as to enable contact between said dome (7, 107, 207a, 207b) and said disk (11) when subjected to a force bringing the same closer to one another.

Description

Commutateur à effet tactile  Touch switch
L'invention concerne un commutateur à effet tactile. The invention relates to a touch-sensitive switch.
De manière connue un commutateur à effet tactile comprend deux organes conducteurs entre lesquels il s'établit une continuité électrique lorsque le commutateur est soumis à une activation mécanique, par exemple par un ou plusieurs doigts d'un utilisateur, et le commutateur transmet un retour tactile à cet utilisateur.  In a known manner, a touch-sensitive switch comprises two conductive members between which electrical continuity is established when the switch is subjected to mechanical activation, for example by one or more fingers of a user, and the switch transmits a tactile feedback. to this user.
Actuellement, les commutateurs à effet tactile doivent répondre à certaines contraintes dimensionnelles et être de plus en plus petits pour présenter un faible encombrement.  Currently, the touch-sensitive switches must meet certain dimensional constraints and be smaller and smaller to have a small footprint.
Par exemple, pour diverses applications de sécurité, de monétique, ou autres, on souhaite incorporer des tels commutateurs à effet tactile à des supports de faible épaisseur, analogues aux cartes bancaires.  For example, for various security applications, electronic banking, or other, it is desired to incorporate such touch-sensitive switches to thin media, similar to bank cards.
Étant donné les dimensions de telles cartes, les commutateurs à effet tactile doivent présenter une faible épaisseur de l'ordre de 0,4 mm.  Given the dimensions of such cards, the touch-sensitive switches must have a small thickness of the order of 0.4 mm.
Cependant les commutateurs à effet tactile connus ne répondent généralement pas à ce critère de dimension.  However, the known touch-sensitive switches do not generally meet this dimension criterion.
L'invention a donc pour objectif de pallier cet inconvénient de l'art antérieur en proposant un commutateur à effet tactile de faible épaisseur tout en garantissant un retour tactile suffisant à l'utilisateur.  The invention therefore aims to overcome this disadvantage of the prior art by providing a touch-sensitive switch of small thickness while ensuring a sufficient tactile feedback to the user.
A cet effet, l'invention a pour objet un commutateur à effet tactile caractérisé en ce qu'il comprend au moins un dôme, au moins un disque et au moins un isolant disposé entre ledit dôme et ledit disque, de sorte que les parties périphériques dudit dôme et dudit disque sont chacune au contact d'une face dudit isolant et sont ainsi en regard de part et d'autre dudit isolant, ledit isolant présentant un orifice central de manière à permettre le contact entre ledit dôme et ledit disque lorsqu'ils sont soumis à une force de rapprochement mutuel.  For this purpose, the subject of the invention is a touch-sensitive switch characterized in that it comprises at least one dome, at least one disc and at least one insulator disposed between said dome and said disc, so that the peripheral parts said dome and said disk are each in contact with a face of said insulator and are thus facing either side of said insulator, said insulator having a central orifice so as to allow contact between said dome and said disk when are subject to a mutual rapprochement force.
Ainsi formé, ledit commutateur garantit un retour tactile et présente une faible épaisseur permettant de l'intégrer de façon simple dans ou sur des supports de faible épaisseur sans augmenter l'encombrement. Ledit commutateur peut en outre comporter une ou plusieurs caractéristiques suivantes, prises séparément ou en combinaison : Thus formed, said switch ensures a tactile feedback and has a small thickness to integrate easily in or on thin media without increasing the size. Said switch may further comprise one or more of the following features, taken separately or in combination:
- ledit commutateur comporte une entretoise configurée pour être disposée entre ledit commutateur et un support dudit commutateur, pour améliorer le fonctionnement dudit commutateur,  said switch comprises a spacer configured to be arranged between said switch and a support of said switch, to improve the operation of said switch,
- l'entretoise est une entretoise isolante,  the spacer is an insulating spacer,
- ledit commutateur présente deux organes de connexion respectivement configurés pour coopérer avec une plage de connexion associée du support dudit commutateur, said switch has two connecting members respectively configured to cooperate with an associated connection pad of the support of said switch,
- l'entretoise est une entretoise conductrice, ce qui simplifie la connexion entre ledit commutateur et le support dudit commutateur, the spacer is a conductive spacer, which simplifies the connection between said switch and the support of said switch,
- ledit commutateur présente un unique organe de connexion configuré pour coopérer avec une plage de connexion associée du support dudit commutateur,  said switch has a single connection element configured to cooperate with an associated connection pad of the support of said switch,
- l'entretoise est formée par une colle, de manière à pouvoir mettre en place de façon simple et rapide ledit commutateur sur le support dudit commutateur,  the spacer is formed by an adhesive so as to be able to set up said switch simply and rapidly on the support of said switch,
- l'entretoise présente une forme annulaire permettant d'augmenter le volume de compression, ce qui améliore le retour haptique, the spacer has an annular shape making it possible to increase the compression volume, which improves the haptic feedback,
- ledit commutateur présente au moins un orifice de communication entre une première chambre de compression définie à l'intérieur dudit dôme et dudit disque, et l'extérieur de la première chambre de compression,  said switch has at least one communication orifice between a first compression chamber defined inside said dome and said disc, and the outside of the first compression chamber,
- l'entretoise définit avec ledit disque une seconde chambre de compression et ledit orifice de communication est formé sur ledit disque, de sorte que la première chambre de compression communique avec la seconde chambre de compression,the spacer defines with said disk a second compression chamber and said communication orifice is formed on said disk, so that the first compression chamber communicates with the second compression chamber,
- ledit orifice de communication est formé sur ledit isolant, said communication orifice is formed on said insulator,
- ledit orifice de communication est formé sur ledit dôme,  said communication orifice is formed on said dome,
- ledit commutateur comprend une surface d'actionnement formée sur ledit dôme qui garantit une bonne activation dudit commutateur, said switch comprises an actuation surface formed on said dome which guarantees a good activation of said switch,
- ledit commutateur comprend un recouvrement muni d'une surface d'actionnement et disposé sur ledit dôme pour protéger ledit commutateur et garantir une bonne activation dudit commutateur,  said switch comprises a cover provided with an actuating surface and disposed on said dome to protect said switch and guarantee a good activation of said switch,
- la surface d'actionnement est réalisée sous la forme d'une protubérance, - la surface d'actionnement est réalisée sous la forme d'un enfoncement, the actuating surface is in the form of a protuberance, the actuating surface is made in the form of a depression,
- ledit dôme et ledit disque sont métalliques de façon à assurer un contact électrique lorsque ledit dôme et ledit disque sont mis en contact par l'activation dudit commutateur,  said dome and said disk are metallic so as to ensure electrical contact when said dome and said disk are brought into contact by the activation of said switch,
- ledit dôme et ledit disque sont réalisés en matière plastique et présentent respectivement un recouvrement conducteur sur les faces dudit dôme et dudit disque en vis-à-vis pour permettre le contact électrique entre ledit dôme et ledit disque lorsque ledit commutateur est activé. said dome and said disk are made of plastics material and respectively have a conductive covering on the faces of said dome and said disk vis-à-vis to allow electrical contact between said dome and said disk when said switch is activated.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels :  Other features and advantages of the invention will emerge more clearly on reading the following description, given by way of illustrative and nonlimiting example, and the appended drawings among which:
- la figure la est une vue en perspective d'une partie de circuit imprimé mince munie d'un commutateur à effet tactile,  FIG. 1a is a perspective view of a thin printed circuit portion provided with a touch-effect switch,
- la figure lb est une vue en perspective d'une partie de circuit imprimé mince et d'un commutateur à effet tactile monté sur la surface du circuit imprimé,  FIG. 1b is a perspective view of a thin printed circuit portion and a touch-sensitive switch mounted on the surface of the printed circuit,
- la figure 2 est une vue en coupe du commutateur à effet tactile selon un premier mode de réalisation,  FIG. 2 is a sectional view of the touch-effect switch according to a first embodiment,
- la figure 3 est une vue éclatée du commutateur à effet tactile,  FIG. 3 is an exploded view of the touch-effect switch,
- la figure 4 représente de façon schématique le dôme et le disque du commutateur à effet tactile réalisés en matière plastique avant assemblage,  FIG. 4 is a diagrammatic representation of the dome and the disk of the touch-sensitive switch made of plastic prior to assembly,
- la figure 5 est une vue de dessous du commutateur à effet tactile,  FIG. 5 is a bottom view of the touch-sensitive switch,
- la figure 6 est une vue en coupe d'un commutateur à effet tactile présentant un orifice de communication sur le disque,  FIG. 6 is a sectional view of a touch-sensitive switch having a communication port on the disc,
- la figure 7 est une vue éclatée d'un commutateur à effet tactile présentant un orifice de communication sur l'isolant,  FIG. 7 is an exploded view of a touch-sensitive switch having a communication orifice on the insulator,
- la figure 8 a est une vue en coupe d'un commutateur à effet tactile présentant une surface d'actionnement sous forme de protubérance sur le dôme,  FIG. 8a is a sectional view of a touch-sensitive switch having an actuating surface in the form of a protuberance on the dome,
- la figure 8b est une vue en coupe d'un commutateur à effet tactile présentant une surface d'actionnement sous forme d'enfoncement sur le dôme,  FIG. 8b is a sectional view of a touch-sensitive switch having an actuating surface in the form of a depression on the dome,
- la figure 8c est une vue en coupe d'un commutateur à effet tactile présentant un recouvrement muni d'une surface d'actionnement et disposé sur le dôme, FIG. 8c is a sectional view of a touch-sensitive switch presenting a covering provided with an actuating surface and arranged on the dome,
- la figure 9 est une vue en perspective d'une partie de circuit imprimé mince et d'un commutateur à effet tactile selon un second mode de réalisation monté sur la surface du circuit imprimé, et FIG. 9 is a perspective view of a thin printed circuit portion and a touch-sensitive switch according to a second embodiment mounted on the surface of the printed circuit, and
- la figure 10 est une vue en coupe d'un commutateur à effet tactile selon un troisième mode de réalisation. - Figure 10 is a sectional view of a touch effect switch according to a third embodiment.
Dans ces figures, les éléments identiques portent les mêmes références.  In these figures, identical elements bear the same references.
Les éléments de la figure 9, respectivement de la figure 10, correspondants aux éléments des figures la à 8c, portent les mêmes références précédées de la centaine 1, respectivement de la centaine 2. De ce fait ces éléments ne seront pas à nouveau décrits.  The elements of FIG. 9, respectively of FIG. 10, corresponding to the elements of FIGS. 1a-8c, bear the same references preceded by the one hundred 1, respectively of the one hundred two. As a result, these elements will not be described again.
De plus, sur certaines figures les dimensions du commutateur à effet tactile ont été représentées pour plus de clarté de façon schématique et exagérée, et ne représentent pas les dimensions réelles.  In addition, in some figures the dimensions of the touch effect switch have been shown for clarity schematically and exaggerated, and do not represent the actual dimensions.
Les figures la à 2 représentent un commutateur 1 à effet tactile selon l'invention, monté sur un circuit imprimé mince 3 c'est à dire de faible épaisseur (de l'ordre du dixième de millimètre) par exemple d'une carte à puce. Ce circuit imprimé 3 peut être un circuit relativement souple. On entend ici par souple, la propriété de partiellement ou totalement perdre et reprendre son volume ou sa forme suite à une compression.  FIGS. 1a to 2 represent a touch-sensitive switch 1 according to the invention, mounted on a thin printed circuit 3, that is to say of small thickness (of the order of a tenth of a millimeter), for example of a smart card . This printed circuit 3 may be a relatively flexible circuit. By flexible means, the property of partially or totally lose and resume its volume or shape following compression.
Sur la figure la, on a représenté un tel commutateur 1 monté dans un logement 5, présentant par exemple un orifice circulaire, du circuit imprimé 3. Ce commutateur 1 est destiné à être activé par appui de chaque côté du commutateur 1, de manière à « pincer » le commutateur 1, on parle de "pinching" en anglais.  In FIG. 1a, there is shown such a switch 1 mounted in a housing 5, having for example a circular orifice, of the printed circuit 3. This switch 1 is intended to be activated by pressing each side of the switch 1, so as to "Pinch" switch 1, we speak of "pinching" in English.
Ce commutateur 1 peut être entouré de parois protectrices disposées en regard du dôme 7 et du disque 11. Ces couches protectrices sont souples de manière à permettre l'activation du commutateur 1 par pincement par exemple entre deux doigts.  This switch 1 may be surrounded by protective walls arranged facing the dome 7 and the disk 11. These protective layers are flexible so as to allow the activation of the switch 1 by pinching for example between two fingers.
La figure lb représente une alternative dans laquelle le commutateur 1 est monté sur la surface du circuit 3, on parle de composant monté en surface CMS ou SMT en anglais pour "Surface Mounted Technology". Dans cet exemple, le circuit 3 peut également être relativement souple.  Figure lb shows an alternative in which the switch 1 is mounted on the surface of the circuit 3, it is referred to surface mounted component CMS or SMT in English for "Surface Mounted Technology". In this example, the circuit 3 can also be relatively flexible.
En se référant aux figures 2 et 3, le commutateur 1 comprend : - un dôme 7 ayant un léger bombement et une partie périphérique circulaire continue 9, Referring to FIGS. 2 and 3, the switch 1 comprises: a dome 7 having a slight bulge and a continuous circular peripheral portion 9,
- un disque plat 11 sans bombement, et  a flat disc 11 without a bulge, and
- un isolant 13 annulaire disposé entre le dôme 7 et le disque 11.  an annular insulation 13 placed between the dome 7 and the disk 11.
Le diamètre du dôme 7 et du disque 11 est par exemple de 8 mm. On peut utiliser en variante des diamètres de 4 à 20 mm pour le dôme 7 et le disque 11.  The diameter of the dome 7 and the disk 11 is for example 8 mm. Diameters of 4 to 20 mm may alternatively be used for the dome 7 and the disk 11.
Le dôme 7 et le disque 11 peuvent présenter une épaisseur de quelques dizaines de micron-mètres.  The dome 7 and the disk 11 may have a thickness of a few tens of micrometers.
Un tel commutateur 1 de faible épaisseur peut facilement être entouré par exemple d'un gel d'étanchéité pour assurer l'étanchéité de manière simple sans augmenter l'encombrement.  Such a switch 1 of small thickness can easily be surrounded for example by a sealing gel to seal in a simple manner without increasing the size.
En outre, l'espace intérieur entre le dôme 7 et le disque 1 1 définit une première chambre de compression Cl permettant le retour haptique lorsque le commutateur 1 est activé.  In addition, the interior space between the dome 7 and the disk 1 1 defines a first compression chamber C1 allowing haptic feedback when the switch 1 is activated.
Selon un premier mode de réalisation, le dôme 7 présente un organe de connexion 15, ici une patte de connexion 15 qui dépasse radialement de sa périphérie 9 pour être au contact d'une plage de connexion 17 associée du circuit imprimé 3 (figures la à 3).  According to a first embodiment, the dome 7 has a connection member 15, here a connecting lug 15 which radially protrudes from its periphery 9 to be in contact with an associated connection pad 17 of the printed circuit 3 (FIGS. 3).
De même, le disque 1 1 présente un organe de connexion 19, ici une patte de connexion 19 qui dépasse radialement du disque 11 pour être au contact d'une plage de connexion 21 associée du circuit imprimé 3.  Similarly, the disc January 1 has a connection member 19, here a connecting tab 19 which protrudes radially from the disc 11 to be in contact with an associated connection pad 21 of the printed circuit board 3.
À cet effet, le circuit imprimé 3 présente des pistes qui forment respectivement les plages de connexion 17 et 21 disposées de part et d'autre du commutateur 1.  For this purpose, the printed circuit 3 has tracks which respectively form the connection pads 17 and 21 arranged on either side of the switch 1.
Selon ce premier mode de réalisation illustré, les organes de connexion 15 et 19 sont sensiblement alignés. On peut prévoir en variante que les organes de connexion 15 et 19 forment un angle prédéterminé.  According to this first illustrated embodiment, the connecting members 15 and 19 are substantially aligned. Alternatively, the connecting members 15 and 19 may form a predetermined angle.
Dans l'exemple de la figure la, ces plages de connexion 17 et 21 sont formées sur des languettes 23,24 disposées autour de l'orifice circulaire du logement 5.  In the example of FIG. 1a, these connection pads 17 and 21 are formed on tongues 23, 24 arranged around the circular orifice of the housing 5.
Les organes de connexion 15 et 19 peuvent respectivement être mis en contact avec les plages de connexion 17 et 21 par soudure. Dans ce cas, les organes de connexion 15 et 19 présentent par exemple un trou (non représenté) permettant le logement de soudure. The connecting members 15 and 19 may respectively be brought into contact with the connection pads 17 and 21 by welding. In this case, the organs of connection 15 and 19 have for example a hole (not shown) for welding housing.
Selon une alternative, les organes de connexion 15 et 19 peuvent être sertis sur les plages de connexion 17 et 21 . À cet effet, on peut prévoir que les organes de connexion 15 et 19 présentent respectivement des picots pour transpercer les plages de connexion 17 et 21 et sertis sur ces plages de connexion 17 et 21 par exemple à l'aide d'une pince spécifique.  Alternatively, the connecting members 15 and 19 can be crimped onto the connection pads 17 and 21. For this purpose, it can be provided that the connecting members 15 and 19 respectively have pins for piercing the connection pads 17 and 21 and crimped on these connection pads 17 and 21 for example with the aid of a specific clamp.
Selon une autre alternative, on peut prévoir de la colle conductrice sur les organes de connexion 15 et 19 pour une mise en place et une connexion plus rapide, notamment lorsque le commutateur 1 est mis en place par une machine de type "pick and place" en anglais pour prendre et placer.  According to another alternative, conductive glue may be provided on the connection members 15 and 19 for faster positioning and connection, in particular when the switch 1 is put in place by a "pick and place" type machine. in English to take and place.
On pourrait encore prévoir que les organes de connexion 15 et 19 présentent des terminaisons de forme générale tubulaire complémentaire d'un câble de connexion relié au circuit imprimé 3.  Provision could also be made for the connection members 15 and 19 to have terminations of generally tubular shape complementary to a connection cable connected to the printed circuit board 3.
Par ailleurs, afin d'assurer un contact électrique entre le dôme 7 et le disque 11, ces derniers sont des organes conducteurs du commutateur 1. À cet effet, le dôme 7 et le disque 11 sont métalliques.  Furthermore, to ensure electrical contact between the dome 7 and the disc 11, the latter are conductive members of the switch 1. To this end, the dome 7 and the disk 11 are metallic.
En variante, le dôme 7 et le disque 11 sont réalisés en matière plastique et présentent un recouvrement conducteur.  Alternatively, the dome 7 and the disc 11 are made of plastic and have a conductive coating.
Une variante de réalisation est illustrée par la figure 4. Selon cette variante, on sérigraphie des pistes 25 et 26 sur un film de polycarbonate ou en polyéthylène téréphtalate (PET), par exemple à l'aide d'une encre conductrice. Bien entendu, on peut prévoir de déposer par jet d'encre les pistes 25,26 sur le film ou encore de laminer les pistes 25,26 sur le film.  An alternative embodiment is illustrated in FIG. 4. According to this variant, tracks 25 and 26 are screen printed on a polycarbonate film or polyethylene terephthalate (PET) film, for example using a conductive ink. Of course, it is possible to deposit inkjet tracks 25,26 on the film or to roll tracks 25,26 on the film.
On réalise ensuite un découpage en forme de huit dont la première boucle du huit forme le dôme 7 du commutateur et dont la deuxième boucle du huit forme le disque plat 11 du commutateur.  An eight-shaped cutout is then made, the first loop of which forms the dome 7 of the switch and whose second loop of the eight forms the flat disk 11 of the switch.
On réalise d'une part par thermo formage une forme de dôme pour former le dôme 7 du commutateur 1 à l'aide d'un moule chauffé par exemple à 150°C, avec un organe de connexion 15 relié à la piste 25, et d'autre part une forme de disque plat pour former le disque 11 du commutateur 1 avec un organe de connexion 17 relié à la piste 26. On the one hand, by thermoforming, a dome shape is used to form the dome 7 of the switch 1 by means of a mold heated for example at 150 ° C., with a connection member 15 connected to the track 25, and on the other hand a flat disc shape for forming the disc 11 of the switch 1 with a connecting member 17 connected to the track 26.
Les pistes 25 et 26 forment alors un recouvrement conducteur des faces du dôme 7 et du disque 11 en vis-à-vis. Lorsque le commutateur est activé et que ces faces sont mises en contact, un contact électrique est alors établi entre le dôme 7 et le disque 11.  The tracks 25 and 26 then form a conductive covering of the faces of the dome 7 and the disk 11 vis-à-vis. When the switch is activated and these faces are brought into contact, an electrical contact is then established between the dome 7 and the disk 11.
Le dôme 7 et le disque 11 sont ensuite pliés et assemblés avec interposition de l'isolant 13 entre eux par exemple par collage.  The dome 7 and the disk 11 are then folded and assembled with the interposition of the insulation 13 between them for example by gluing.
Par ailleurs, en se référant à nouveau à la figure 3, l'isolant 13 présente un orifice central 27 suffisamment grand de sorte que lorsqu'une pression est exercée par pincement du commutateur 1 ou par appui sur le commutateur 1, le sommet du dôme 7 et le disque 11 sont rapprochés à travers cet orifice 27 et mis en contact électrique. Lorsque le commutateur 1 est relâché, il retourne en position de repos dans laquelle le dôme 7 et le disque 11 sont distants de sorte qu'il n'y a plus de contact électrique entre le dôme 7 et le disque 11.  On the other hand, referring again to FIG. 3, the insulator 13 has a sufficiently large central orifice 27 that when pressure is exerted by pinching the switch 1 or by pressing the switch 1, the top of the dome 7 and the disc 11 are brought together through this orifice 27 and brought into electrical contact. When the switch 1 is released, it returns to the rest position in which the dome 7 and the disk 11 are distant so that there is no more electrical contact between the dome 7 and the disk 11.
La course entre cette position de repos et la position active obtenue par contact du dôme 7 et du disque 11 est de l'ordre de 0,17 mm.  The stroke between this rest position and the active position obtained by contact of the dome 7 and the disk 11 is of the order of 0.17 mm.
L'isolant 13 peut être formé d'un anneau de colle isolante placé entre le dôme 7 et le disque 11, avec une épaisseur suffisante pour assurer l'isolement, de sorte que l'épaisseur totale du commutateur soit de l'ordre de 0,4 mm.  The insulator 13 may be formed of an insulating adhesive ring placed between the dome 7 and the disk 11, with a sufficient thickness to ensure the isolation, so that the total thickness of the switch is of the order of 0 , 4 mm.
En outre, on peut prévoir une entretoise 29 non conductrice disposée entre le disque 1 1 et le circuit imprimé 3 (figure 2). L'entretoise 29 définit alors une deuxième chambre de compression C2 avec le disque 11.  In addition, there can be provided a non-conductive spacer 29 disposed between the disk 1 1 and the printed circuit 3 (Figure 2). The spacer 29 then defines a second compression chamber C2 with the disk 11.
Cette entretoise 29 peut être une entretoise souple.  This spacer 29 may be a flexible spacer.
Cette entretoise 29 est par exemple formée par de la colle pour une mise en place plus rapide du commutateur 1 sur le circuit imprimé 3 et qui permet également d'assurer une fonction d'étanchéité.  This spacer 29 is for example formed by glue for faster implementation of the switch 1 on the printed circuit 3 and which also provides a sealing function.
Dans l'exemple illustré sur les figures 2, 5, 6 et 8a à 8c, l'entretoise 29 présente une forme annulaire. Cette forme annulaire de l'entretoise 29 permet d'augmenter le volume de compression du commutateur 1, et ainsi améliorer le retour haptique. D'autres formes pour l'entretoise 29 peuvent être envisagées. Dans le mode de réalisation illustré sur la figure 2, il n'y a pas de communication entre l'espace délimité à l'intérieur du commutateur 1 , entre le dôme 7 et le disque 11 , et l'espace extérieur au commutateur 1. L'espace intérieur et l'espace extérieur étant à la même pression, pour permettre le fonctionnement du commutateur 1 , ce dernier peut être réalisé sous vide. Pour cela, on peut monter le commutateur 1 en position active dans laquelle le dôme 7 et le disque 11 sont mis en contact. In the example illustrated in Figures 2, 5, 6 and 8a to 8c, the spacer 29 has an annular shape. This annular shape of the spacer 29 makes it possible to increase the compression volume of the switch 1, and thus to improve the haptic feedback. Other forms for the spacer 29 may be envisaged. In the embodiment illustrated in FIG. 2, there is no communication between the space delimited inside the switch 1, between the dome 7 and the disk 11, and the space outside the switch 1. The inner space and the outer space being at the same pressure, to allow the operation of the switch 1, the latter can be made under vacuum. For this, one can mount the switch 1 in the active position in which the dome 7 and the disc 11 are brought into contact.
Comme précédemment, une fois le commutateur 1 monté et relâché, ce dernier retourne en position de repos dans laquelle le dôme 7 et le disque 11 sont distants.  As before, once the switch 1 is mounted and released, the latter returns to the rest position in which the dome 7 and the disk 11 are distant.
On peut également réaliser un commutateur 1 sous vide en assemblant le dôme 7 et le disque 11 dans une enceinte sous vide d'air.  It is also possible to perform a vacuum switch 1 by assembling the dome 7 and the disc 11 in a vacuum chamber.
Selon une alternative représentée sur les figures 3 et 6, l'espace intérieur du commutateur 1 est mis en liaison avec l'espace extérieur au commutateur 1, par un orifice de communication formé par exemple par un trou 31 sur le disque 1 1 de sorte que la première chambre de compression C 1 communique avec la deuxième chambre de compression C2 ou encore formé sur le dôme 7 selon une variante non illustrée.  According to an alternative shown in FIGS. 3 and 6, the interior space of the switch 1 is connected to the space outside the switch 1, by a communication orifice formed for example by a hole 31 on the disc 1 1 so that that the first compression chamber C 1 communicates with the second compression chamber C2 or formed on the dome 7 according to a variant not shown.
Selon une autre alternative illustrée par la figure 7, l'orifice de communication est formé par un canal 32 sur l'isolant 13, de préférence en direction inclinée par rapport à une direction radiale.  According to another alternative illustrated in FIG. 7, the communication orifice is formed by a channel 32 on the insulator 13, preferably in an inclined direction with respect to a radial direction.
On pourrait prévoir encore que l'espace intérieur contient de l'air ou un gaz à la pression atmosphérique ou à une pression supérieure, et n'est pas relié à l'extérieur. Ainsi, lors de la fermeture du commutateur, la compression du gaz placé à l'intérieur augmente la force de pression nécessaire.  It could be further provided that the interior space contains air or a gas at atmospheric pressure or at a higher pressure, and is not connected to the outside. Thus, when closing the switch, compression of the gas placed inside increases the required pressure force.
Le commutateur 1 peut présenter en outre une surface d'actionnement 33 pour améliorer le retour haptique (voir figures 8a à 8c).  The switch 1 may furthermore have an actuating surface 33 for improving the haptic feedback (see FIGS. 8a to 8c).
Cette surface d'actionnement 33 peut être formée directement sur le dôme 7 This actuating surface 33 can be formed directly on the dome 7
(figures 8a,8b) ou en alternative sur un recouvrement 35 du commutateur 1 par exemple en silicone disposé sur le dôme 7 (figure 8c). Ce recouvrement 35 assure en outre une fonction d'étanchéité. (Figures 8a, 8b) or alternatively on a cover 35 of the switch 1 for example silicone disposed on the dome 7 (Figure 8c). This covering 35 also provides a sealing function.
De plus, la surface d'actionnement 33 peut former une protubérance ou un téton (figures 8a,8c) ou en variante un enfoncement (figure 8b). Plusieurs commutateurs 1 ainsi formés peuvent être conditionnés en bande pour améliorer encore la rapidité de mise en place des commutateurs 1 sur les circuits imprimés 3. A titre d'exemple, les commutateurs 1 sont maintenus sur un film silicone par un adhésif, et le film silicone présente des trous de guidage. In addition, the actuating surface 33 may form a protuberance or pin (FIGS. 8a, 8c) or alternatively a recess (FIG. 8b). Several switches 1 thus formed can be packaged in strips to further improve the speed of placement of the switches 1 on the printed circuits 3. By way of example, the switches 1 are held on a silicone film by an adhesive, and the film silicone has guide holes.
Un second mode de réalisation illustré par la figure 9 diffère du premier mode de réalisation par le fait que l'entretoise 129 est conductrice.  A second embodiment illustrated in FIG. 9 differs from the first embodiment in that the spacer 129 is conductive.
Selon ce second mode de réalisation, seul le dôme 107 présente un organe de connexion 115, ici une patte de connexion 115 qui dépasse radialement de sa périphérie 109 pour être au contact d'une plage de connexion 117 associée du circuit imprimé 103.  According to this second embodiment, only the dome 107 has a connection member 115, here a connection lug 115 which protrudes radially from its periphery 109 so as to be in contact with an associated connection pad 117 of the printed circuit 103.
En effet, il n'est plus nécessaire que le disque présente un organe de connexion pour être au contact d'une plage de connexion 121 associée du circuit imprimé 103.  Indeed, it is no longer necessary for the disk to have a connection member to be in contact with an associated connection pad 121 of the printed circuit board 103.
Au contraire, l'entretoise 129 assure la connexion du disque avec la plage de connexion 121 sans nécessiter de soudure ou autre moyen de connexion.  In contrast, the spacer 129 connects the disk to the connection pad 121 without the need for soldering or other connection means.
Un troisième mode de réalisation illustré par la figure 10, diffère du premier et du second modes de réalisation en ce que le commutateur 201 présente plusieurs couches. En effet, le commutateur 201 comporte :  A third embodiment illustrated in FIG. 10 differs from the first and second embodiments in that the switch 201 has several layers. Indeed, the switch 201 comprises:
un premier 207a et un second 207b dômes ayant chacun un léger bombement, un disque plat 211 sans bombement,  a first 207a and a second 207b domes each having a slight bulge, a flat disc 211 without a bulge,
un premier isolant 213a interposé entre le disque 211 et le premier dôme 207a, et - un second isolant 213b interposé entre le disque 211 et le second dôme 207b.  a first insulator 213a interposed between the disk 211 and the first dome 207a, and - a second insulator 213b interposed between the disk 211 and the second dome 207b.
De façon analogue au premier mode de réalisation précédemment décrit, le commutateur 201 peut présenter une surface d'actionnement sur un des dômes 207a ou 207b ou sur les deux dômes 207a et 207b.  Similarly to the first embodiment described above, the switch 201 may have an actuating surface on one of the domes 207a or 207b or on the two domes 207a and 207b.
De plus, le commutateur 201 peut présenter une entretoise 229 en regard du second dôme 207b destinée à être disposée sur le circuit imprimé.  In addition, the switch 201 may have a spacer 229 facing the second dome 207b to be disposed on the printed circuit.
Cette entretoise 229 peut être non conductrice conformément au premier mode de réalisation ou conductrice conformément au second mode de réalisation.  This spacer 229 may be non-conductive according to the first embodiment or conductor according to the second embodiment.
Dans ce dernier cas où l'entretoise 229 est conductrice, seuls le premier dôme 207a et le disque 211 présentent des organes de connexion à des plages de connexion associées du circuit imprimé, le second dôme 207b étant connecté au circuit imprimé par l'intermédiaire de l'entretoise conductrice 229. In the latter case where the spacer 229 is conductive, only the first dome 207a and the disk 211 have connecting members to associated connection pads of the printed circuit, the second dome 207b being connected to the printed circuit board via the conductive spacer 229.
L'utilisation d'un tel commutateur 201 avec plusieurs couches, ici deux couches à l'aide de deux dômes 207a,207b, permet d'augmenter la force de pression nécessaire pour activer le commutateur 201 ou encore de réaliser une succession d'activation.  The use of such a switch 201 with several layers, here two layers using two domes 207a, 207b, makes it possible to increase the pressure force necessary to activate the switch 201 or to carry out a succession of activation .
En effet, à titre d'exemple, on peut prévoir que lorsque le commutateur 201 est soumis à une première pression le premier dôme 207a est mis en contact avec le disque 211 et lorsque le commutateur 201 est soumis à une seconde pression supérieure à la première pression c'est le second dôme 207b qui est mis en contact avec le disque plat 211.  By way of example, it can be provided that when the switch 201 is subjected to a first pressure, the first dome 207a is brought into contact with the disk 211 and when the switch 201 is subjected to a second pressure greater than the first one. pressure it is the second dome 207b which is brought into contact with the flat disk 211.
On peut ainsi définir plusieurs états pour le commutateur 201, ici trois états : un premier état dans lequel le commutateur 201 est en position de repos avec les dômes 207a et 207b distants du disque 211,  It is thus possible to define several states for the switch 201, here three states: a first state in which the switch 201 is in the rest position with the domes 207a and 207b remote from the disk 211,
un deuxième état dans lequel le premier dôme 207a est mis en contact avec le disque 211 pour commander une première fonction, et  a second state in which the first dome 207a is brought into contact with the disk 211 to control a first function, and
- un troisième état dans lequel le second dôme 207b est mis en contact avec le disque 211 pour commander une deuxième fonction. a third state in which the second dome 207b is brought into contact with the disk 211 to control a second function.
Bien entendu, on peut prévoir un commutateur 201 avec plus de deux couches à l'aide de plusieurs dômes 207a,207b et plusieurs disques 211.  Of course, a switch 201 with more than two layers can be provided using several domes 207a, 207b and several disks 211.
On comprend donc qu'un tel commutateur de faible épaisseur peut être facilement intégré à un circuit imprimé par exemple d'une carte de faible épaisseur, telle qu'une carte bancaire tout en assurant un retour tactile à l'utilisateur lorsque le commutateur est activé.  It is therefore understood that such a thin switch can be easily integrated into a printed circuit, for example a thin card, such as a bank card while ensuring a tactile feedback to the user when the switch is activated. .
Un autre exemple d'application est un habillement intelligent, c'est-à-dire un habillement intégrant un tel commutateur par exemple pour la commande d'un lecteur portable.  Another example of an application is intelligent clothing, that is to say a clothing incorporating such a switch for example for the control of a portable player.
Un tel commutateur avec une faible épaisseur s'applique également très bien pour la réalisation d'une touche discrète, c'est à dire pratiquement invisible.  Such a switch with a small thickness also applies very well for the realization of a discrete touch, that is to say practically invisible.
En outre, un tel commutateur peut remplacer un commutateur tactile traditionnel appelé « tact switch » en anglais.  In addition, such a switch can replace a traditional touch switch called "tact switch" in English.

Claims

REVENDICATIONS
Commutateur à effet tactile caractérisé en ce qu'il comprend au moins un dôme (7,107,207a,207b), au moins un disque (11) et au moins un isolant (13,213a,213b) disposé entre ledit dôme (7, 107,207a,207b) et ledit disque (1 1), de sorte que les parties périphériques dudit dôme (7,107,207a,207b) et dudit disque (11) sont chacune au contact d'une face dudit isolant (13,213a,213b) et sont ainsi en regard de part et d'autre dudit isolant (13,213a,213b), ledit isolant (13,213a,213b) présentant un orifice central (27) de manière à permettre le contact entre ledit dôme (7,107,207a,207b) et ledit disque (11) lorsqu'ils sont soumis à une force de rapprochement mutuel. Switch with tactile effect characterized in that it comprises at least one dome (7,107,207a, 207b), at least one disc (11) and at least one insulator (13,213a, 213b) disposed between said dome (7, 107, 207a, 207b) and said disk (1 1), so that the peripheral portions of said dome (7, 107, 207a, 207b) and said disk (11) are each in contact with a face of said insulator (13, 23a, 213b) and are thus in contact with each other. view on either side of said insulator (13,213a, 213b), said insulator (13,213a, 213b) having a central orifice (27) so as to allow contact between said dome (7,107,207a, 207b) and said disk ( 11) when subjected to a mutual rapprochement force.
Commutateur selon la revendication 1, caractérisé en ce qu'il comporte en outre une entretoise (29,129,229) configurée pour être disposée entre ledit commutateur et un support (3,103) dudit commutateur. Switch according to claim 1, characterized in that it further comprises a spacer (29,129,229) configured to be disposed between said switch and a support (3,103) of said switch.
Commutateur selon la revendication 2, caractérisé en ce que l'entretoise (29,229) est une entretoise isolante. Switch according to claim 2, characterized in that the spacer (29,229) is an insulating spacer.
Commutateur selon la revendication 3, caractérisé en ce que ledit commutateur (1,201) présente deux organes de connexion (15,19 ; 215a,215b) respectivement configurés pour coopérer avec une plage de connexion associée (17,21) du support (3) dudit commutateur. Switch according to claim 3, characterized in that said switch (1,201) has two connecting members (15,19; 215a, 215b) respectively configured to cooperate with an associated connection pad (17,21) of the support (3) of said switch.
Commutateur selon la revendication 2, caractérisé en ce que l'entretoise (129) est une entretoise conductrice. Switch according to claim 2, characterized in that the spacer (129) is a conductive spacer.
Commutateur selon la revendication 5, caractérisé en ce que ledit commutateur (101) présente un unique organe de connexion (115) configuré pour coopérer avec une plage de connexion associée (117) du support (103) dudit commutateur. Switch according to claim 5, characterized in that said switch (101) has a single connecting member (115) configured to cooperate with an associated connection pad (117) of the holder (103) said switch.
Commutateur selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'entretoise (29,129,229) est formée par une colle. Switch according to any one of claims 2 to 6, characterized in that the spacer (29,129,229) is formed by an adhesive.
Commutateur selon l'une quelconque des revendications 2 à 7, caractérisé en ce que l'entretoise (29,129,229) présente une forme annulaire. Switch according to any one of claims 2 to 7, characterized in that the spacer (29,129,229) has an annular shape.
Commutateur selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit commutateur présente au moins un orifice de communication (31,32) entre une première chambre de compression (Cl) définie à l'intérieur dudit dôme (7,107,207a,207b) et dudit disque (11), et l'extérieur de la première chambre de compression (Cl). 10. Commutateur selon l'une quelconque des revendications 2 à 8, prise en combinaison avec la revendication 9, caractérisé en ce que l'entretoise (29,129,229) définit avec ledit disque (11) une seconde chambre de compression (C2) et en ce que ledit orifice de communication (31) est formé sur ledit disque (11) de sorte que la première chambre de compression (Cl) communique avec la seconde chambre de compression (C2). Switch according to any one of the preceding claims, characterized in that said switch has at least one communication port (31,32) between a first compression chamber (C1) defined inside said dome (7,107,207a, 207b) and said disk (11), and the outside of the first compression chamber (Cl). 10. Switch according to any one of claims 2 to 8, taken in combination with claim 9, characterized in that the spacer (29,129,229) defines with said disc (11) a second compression chamber (C2) and in that said communication port (31) is formed on said disk (11) so that the first compression chamber (C1) communicates with the second compression chamber (C2).
11. Commutateur selon la revendication 9, caractérisé en ce que ledit orifice de communication (32) est formé sur ledit isolant (13,213a,213b). 12. Commutateur selon la revendication 9, caractérisé en ce que ledit orifice de communication est formé sur ledit dôme (7,107,207a,207b). 11. Switch according to claim 9, characterized in that said communication port (32) is formed on said insulator (13,213a, 213b). 12. Switch according to claim 9, characterized in that said communication port is formed on said dome (7,107,207a, 207b).
13. Commutateur selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'il comprend une surface d'actionnement (33) formée sur ledit dôme (7,107,207a,207b). 13. Switch according to any one of claims 1 to 12, characterized in that it comprises an actuating surface (33) formed on said dome (7,107,207a, 207b).
14. Commutateur selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'il comprend un recouvrement (35 ) muni d'une surface d'actionnement (33) et disposé sur ledit dôme (7,107,207a,207b). 14. Switch according to any one of claims 1 to 12, characterized in that it comprises a cover (35) provided with an actuating surface (33) and disposed on said dome (7,107,207a, 207b).
15. Commutateur selon l'une des revendications 13 ou 14, caractérisé en ce que la surface d'actionnement (33) est réalisée sous la forme d'une protubérance. 15. Switch according to one of claims 13 or 14, characterized in that the actuating surface (33) is formed as a protuberance.
16. Commutateur selon l'une des revendications 13 ou 14, caractérisé en ce que la surface d'actionnement (33) est réalisée sous la forme d'un enfoncement. 16. Switch according to one of claims 13 or 14, characterized in that the actuating surface (33) is formed as a recess.
17. Commutateur selon l'une quelconque des revendications 1 à 16, caractérisé en ce que ledit dôme (7,107,207a,207b) et ledit disque (11) sont métalliques. 17. Switch according to any one of claims 1 to 16, characterized in that said dome (7,107,207a, 207b) and said disk (11) are metallic.
18. Commutateur selon l'une quelconque des revendications 1 à 16, caractérisé en ce que ledit dôme (7, 107,207a,207b) et ledit disque (1 1) sont réalisés en matière plastique et présentent respectivement un recouvrement conducteur sur les faces dudit dôme et dudit disque en vis-à-vis. 18. Switch according to any one of claims 1 to 16, characterized in that said dome (7, 107, 207a, 207b) and said disk (1 1) are made of plastic and respectively have a conductive coating on the faces of said dome and said disc vis-à-vis.
EP10754478A 2009-09-15 2010-09-14 Touch-sensitive switch Withdrawn EP2478542A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0904397A FR2950193A1 (en) 2009-09-15 2009-09-15 TOUCH-EFFECT SWITCH
PCT/EP2010/063421 WO2011032923A1 (en) 2009-09-15 2010-09-14 Touch-sensitive switch

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EP2478542A1 true EP2478542A1 (en) 2012-07-25

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US (1) US20120186965A1 (en)
EP (1) EP2478542A1 (en)
FR (1) FR2950193A1 (en)
WO (1) WO2011032923A1 (en)

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WO2011032923A1 (en) 2011-03-24
US20120186965A1 (en) 2012-07-26

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