EP0653768A1 - Control keyboard for electric or electronic system, in particular anti-theft system for motor vehicles - Google Patents

Control keyboard for electric or electronic system, in particular anti-theft system for motor vehicles Download PDF

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Publication number
EP0653768A1
EP0653768A1 EP94402123A EP94402123A EP0653768A1 EP 0653768 A1 EP0653768 A1 EP 0653768A1 EP 94402123 A EP94402123 A EP 94402123A EP 94402123 A EP94402123 A EP 94402123A EP 0653768 A1 EP0653768 A1 EP 0653768A1
Authority
EP
European Patent Office
Prior art keywords
membrane
keyboard according
plate
housing
printed circuit
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.)
Granted
Application number
EP94402123A
Other languages
German (de)
French (fr)
Other versions
EP0653768B1 (en
Inventor
Fabrice Cogordan
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.)
Marelli France SAS
Original Assignee
Jaeger 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 Jaeger SA filed Critical Jaeger SA
Publication of EP0653768A1 publication Critical patent/EP0653768A1/en
Application granted granted Critical
Publication of EP0653768B1 publication Critical patent/EP0653768B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/01—Venting with internal pressure of other switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/044—Edge lighting of layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/056—Diffuser; Uneven surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/042—Snap coupling; Snap mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/01—Miscellaneous combined with other elements on the same substrate
    • H01H2239/014—Miscellaneous combined with other elements on the same substrate on both sides

Definitions

  • the present invention relates to the field of keyboards for controlling electrical or electronic systems.
  • the present invention finds particular application in the production of an anti-theft system for a motor vehicle, comprising a control keyboard, and a circuit capable of acting on at least one active member of the vehicle, for example injection means, to invalidate that -ci, failing to introduce a predetermined code using the keyboard within a predefined period.
  • Such keyboards are for example disclosed in documents FR-A-2669462 and FR-A-2647588, according to which the keys are integrated into the membrane.
  • the main object of the present invention is to improve existing keyboard systems.
  • the keyboard according to the present invention can be completed by a printed front 600 visible in FIG. 5 and an additional sealing membrane 700 visible in FIG. 9.
  • the cover 100 and the bottom 200 constituting the housing can be the subject of numerous variant embodiments. Preferably, they are produced by plastic molding.
  • the outline of the cover 100 and the bottom 200 can also be the subject of numerous variants, preferably, these have a rectangular outline, as can be seen in the appended figures.
  • the cover 100 more precisely comprises a generally flat wall 110 forming the front face of the keyboard, surrounded by a rectangular skirt 150 projecting from its rear face.
  • the wall 110 is provided on its front face with a peripheral framing rib 113 whose height is equal to the thickness of the printed facade 600.
  • the front wall 110 is provided with several openings.
  • the wall 110 is provided with several openings 120 intended to each receive an associated key 320 provided on the membrane 300.
  • these openings 120 are regularly arranged in a matrix of rows and columns on the wall 110.
  • the wall 110 has twelve openings 120 arranged in four columns of three rows.
  • the section of the openings 120 must be complementary to the cross section of the keys 320.
  • the openings 120 are of rounded oblong shape.
  • the wall 110 also has a second series of openings 122 designed to be placed opposite respectively associated symbols 622 formed on the printed facade 600.
  • a symbol 622 and consequently an opening 122 are associated respectively with each key 320.
  • the geometry of the openings 122 can be the subject of numerous variant embodiments.
  • openings 124 are preferably placed laterally with respect to the opening matrix 120 receiving the keys 320.
  • the openings 124 are designed to receive indicators carried by the printed circuit 500 for viewing the state of the control circuit.
  • these openings 124 are each surrounded by a cylindrical sheath 126 projecting from the rear face of the wall 110.
  • the wall 110 is also advantageously provided, on its rear face with protruding pins 116, for example cylindrical, designed to ensure the centering of the plate 400. According to the embodiment particular shown in the accompanying figures, two centering pins 116 are thus provided on the rear face of the wall 110.
  • the front cover 100 and the rear bottom 200 can be immobilized by any suitable known means, for example by gluing, ultrasonic welding, screwing, etc.
  • the cover 100 and the rear bottom 200 are snapped together.
  • the front cover 100 is preferably provided, at the level of the skirt 150, with four elastic tabs 152 each provided with a toothing 154, capable of engaging with a respective housing 254 formed in the rear bottom 200.
  • the front cover 100 also has, at its peripheral skirt 150, snap-fastening structures for the plate 400 and the printed circuit 500.
  • a pair of snap teeth 160 is thus provided on each of the two long sides of the skirt 150. These snap teeth 160 are connected to the peripheral wall 150 in the vicinity of the rear edge thereof. and protrude both forwards and inwards from the cover 100.
  • the peripheral skirt 150 is also provided with internal walls 162 making it possible to guide and position the plate 400. These walls 162 extend perpendicularly to the wall 110.
  • the peripheral skirt 150 also has snap teeth 170 for the printed circuit 500. There is thus preferably provided a toothing 170 on at least three sides of the peripheral skirt 150.
  • the teeth 170 are located at a distance from the wall 110 greater than the distance separating this wall from the aforementioned teeth 160 designed to immobilize the plate 400.
  • the teeth 170 are of preferably molded on the inner face of the peripheral skirt 150, as seen in particular in Figure 10 and Figure 12.
  • the skirt 150 can be provided on its internal face with various ribs 156 orthogonal to the wall 110. These ribs 156 can serve as guidance and support for the printed circuit 500.
  • the rear bottom 200 can be the subject of numerous variant embodiments. It has a complementary geometry of the front cover 100. Essentially, the rear bottom 200 comprises a generally flat rear wall 210 surrounded by a peripheral skirt 250 of the same geometry as the peripheral skirt 150 of the front cover 100.
  • the openings 254 intended to receive the elastic tongues 152 are formed in the peripheral skirt 250.
  • the rear bottom 200 has a housing 220 designed to receive a connector 520 carried by the printed circuit 500.
  • the membrane 300 is preferably made of silicone material or equivalent. More specifically, the membrane 300 is essentially composed of an electrically non-conductive elastic material.
  • the membrane 300 performs three basic essential functions.
  • the first function of the membrane 300 is to ensure contacting on the printed circuit 500 when a key 320 is pressed.
  • the second function of the membrane 300 is to ensure the timing of the plate 400 and the printed circuit 500.
  • the third function of the membrane 300 is to seal the system.
  • the membrane 300 essentially comprises a flat sheet 310 which carries a plurality of actuating keys 320 in a number equal to the number of openings 120 provided in the front face 110 of the housing.
  • the keys 320 are thus placed on the sheet 310 in a matrix arrangement identical to that of the openings 120 in the wall 110.
  • the keys 320 came from molding with the sheet 310.
  • the keys 320 can be the subject of numerous variant embodiments known to those skilled in the art, as described for example in the documents of the state of the art FR-A-2669462 and FR-A-2647588.
  • Each key 320 mainly comprises a block 322 of rounded envelope, projecting from the front face of the sheet 310.
  • the cross section, parallel to the sheet 310, of each block 322, is complementary to the cross section of the openings 120.
  • Each block 322 is connected to the surrounding sheet 310 by means of a blistering lip of frustoconical shape 324.
  • this connecting lip 324 between the sheet 310 and each block 322 is to authorize an abrupt movement of each key 320 when the force exerted on it exceeds a predetermined threshold.
  • the connecting lips 324 are, at rest, concave towards the rear of the membrane 300 so that the blistering effect of the keys 320 is obtained by reversing the concavity of these connecting lips 324.
  • each block 322 is extended by a central finger 326, for example cylindrical, projecting from the rear face of the membrane 300.
  • each finger 326 is thus placed opposite the printed circuit 500.
  • This rear end of each finger 326 is provided with a pad 328 of electrically conductive material, for example carbon or any other electrically conductive material, such as for example a noble metal.
  • the pellets 328 can be overmolded or screen printed, or else deposited by any equivalent means on the rear end of the fingers 326.
  • the membrane 310 is provided on its front face with a network of grooves 330. These grooves 330 communicate, on the one hand with each other, on the other hand communicate with the cavities 332 delimited around each block 322 by the lips link blisters 324.
  • two series of orthogonal grooves 330 are provided, which surround each key 320. These grooves 330 are used in particular when the keyboard incorporates an additional sealing membrane 700 on the front of the keyboard membrane 300, to avoid the harmful suction effects which may result from the juxtaposition of two waterproof membranes.
  • the sheet 310 is provided on its rear face with several projecting orthogonal candles 340.
  • a candle 340 is provided near each of the four corners of the rear face of the membrane 300.
  • a first candle 341 is formed of a solid pawn of square cross section.
  • a second candle 342 is formed from a solid pawn of rectangular cross section.
  • the other two candles 343, 344 are formed of hollow cylindrical chimneys. These cylindrical chimneys 343, 344 are placed opposite the openings 124 formed in the wall 110. They are intended to receive the indicators for displaying the state of the system.
  • the candles 340 are intended to support, by their rear face, and consequently to wire, the printed circuit 500, when the latter is snapped into the teeth 170.
  • the membrane 300 is also preferably provided with cylindrical barrels 350 intended to receive the centering pins 116 and seal them thereon.
  • the barrels 350 protrude from the rear face of the membrane 300.
  • a second membrane 700 improving the seal can be placed on the front of the keyboard membrane 300.
  • This seal membrane 700 advantageously has a constant thickness. It essentially comprises a flat sheet 710 provided with a network of protrusions 720 of geometry and complementary arrangement of the blocks 322.
  • the sealing membrane 700 may have openings placed opposite the openings 122 of the wall 110.
  • It also preferably has openings 724 placed opposite the openings 124 of the wall 110 and openings 716 receiving the centering pins 116.
  • Cutouts 762 formed on the periphery of the membrane 700 are engaged on the walls 162 of the housing.
  • the sealing membrane 700 is thus pinched between the internal face of the wall 110 and the membrane forming the keyboard 300.
  • the waterproofing membrane 700 is advantageously formed from translucent silicone material, loaded where appropriate with colored pigments, for example black pigments, depending on the style and aesthetics sought.
  • the presence of the waterproofing membrane 700 charged with pigment, on the front of the membrane forming the keyboard 300, makes it possible to improve the homogeneity of the lighting, despite the presence of discrete sources for ensuring this lighting, on the printed circuit 500.
  • the production of the snap teeth 160, 170, by molding, on the peripheral skirt 150 of the front cover 100 results in the formation of openings 112 on the front face of the housing.
  • At least one of the two silicone membranes 300, 700 is provided with peripheral beads or lips adapted to close these openings 112.
  • the plate 400 shown in Figure 8 is made of an optically transparent material, for example polycarbonate or poly (methacrylate) methyl. This part 400 is preferably produced by molding.
  • Another function of the plate 400 is to serve as support and support for the sheet 310 of the membrane forming the keyboard 300 by means of the snap-fastening on the teeth 160.
  • Another function of the plate 400 is to guide the keys 320 in translation perpendicular to the wall 110.
  • Another function of the plate 400 is to guide the holding candles 340 provided on the rear face of the membrane 300.
  • the plate 400 has a complementary contour of the internal volume of the housing.
  • the plate 400 preferably has a rectangular outline.
  • the plate 400 has at least one through bore 480 intended to receive a light source carried by the printed circuit 500.
  • This bore 480 is preferably cylindrical of revolution around an axis perpendicular to the mean plane of the plate 400 so that the light from the light source 580 penetrates into the plate 400 without refraction or reflection.
  • the plate 400 has two bores 480. These two bores 480 are arranged substantially along a diagonal of the key matrix 320, or more precisely in the center of two respective groups of four keys 320 located on diagonally opposite corners of this matrix.
  • the plate 400 is preferably provided with projecting ears 460. It is thus preferably provided two ears 460 projecting respectively on each long side of the plate 400, designed to engage with teeth 160 respectively.
  • these ears 460 have beveled engagement edges 462.
  • the plate 400 is provided with a matrix of through bores 426 of cross section complementary to said fingers 326. These bores 426 are provided in the center of cavities 422 opening out on the front plate 400. These cavities 422 have a cross section complementary to the blocks 322, to allow the blistering movement of the latter.
  • these cavities 422 are themselves surrounded by an annular recess 429 intended to receive a complementary rib 329 provided on the rear face of the membrane 300 on the periphery of each key 320.
  • the plate 400 also has openings 441, 442, 443 and 444 respectively complementary to the candles 341, 342, 343, 344 and intended to receive these. Finally, the plate 400 has through passages 416 intended to receive the complementary centering fingers 116.
  • these passages 416 and the complementary pins 116 are stepped.
  • the wafer 410 of the plate 400 is preferably formed of two facets 412, 414 symmetrical with respect to a median plane of the plate 400, inclined on the order of 45 ° relative to this median plane and forming a convex dihedral towards the outside of the plate 400.
  • reflection surfaces intended to reflect the light channeled by the plate 400 in the direction of the blocks 322 forming the keys.
  • These reflection surfaces can be formed of any suitable structure. These are, for example, simple frustoconical cavities produced by molding, with a concavity opening onto the rear face of the plate 400.
  • the number and the arrangement of these reflection surfaces are determined according to the particular location of the keys on the plate 400.
  • the printed circuit 500 can be the subject of numerous variant embodiments. Its structure will therefore not be described in detail below.
  • It is preferably a double-sided printed circuit.
  • the printed facade 600 shown in FIG. 5 can be the subject of numerous variant embodiments, depending on the style of keyboard sought.
  • the symbols 622 are produced by screen printing in a sheet of plastic material, for example based on the material sold under the name "LEXAN”.
  • the front panel 600 has openings 620 allowing the passage of the keys 320, as well as colored areas 624 placed respectively with regard to the indicator lights carried by the circuit 500 and placed in the chimneys 343, 344.
  • the light sources 580 carried by the printed circuit 500 can be formed by any suitable known lighting means, such as for example light-emitting diodes.
  • the light sources 580 are preferably formed from small filament lamps.
  • the procedure is essentially as follows.
  • the sealing membrane 700 when the latter is used, is placed on the front face of the membrane 300 forming the keyboard and the assembly thus formed is disposed inside the cover 100.
  • the support plate 400 is then engaged in the cover 100, taking care to introduce the fingers 326 into the openings 426 and the candles 341, 342, 343, 344 in the complementary passages 441, 442, 443 and 444.
  • the plate 400 is immobilized at the inside of the cover 100 as soon as the ears 460 cross the snap teeth 160.
  • the plate 400 is then cabled and free from any play thanks to the pinching of the membrane 300 obtained between the internal face of the wall 110 of the cover and the support plate 400, at the ribs 329 surrounding each key 320, in the respective recess 429 of the plate 400.
  • the height of the fingers 326 and of the candles 340 is greater than the thickness of the plate 400 so that the fingers 326 and the candles 340 protrude from the rear face of the plate 400.
  • the conductive pads 328 preferably formed of carbon are located on the rear of the plate 400 and in no way disturb the path of the light which passes from the plate 400 into the fingers 326 of the keys 320 to ensure the lighting of these.
  • the candles 340 serve as an elastic support for the printed circuit 500.
  • the thickness of the membrane 300 at the ribs 329 must be greater than L1-L2, relationship in which L1 represents the distance separating the latching face of the teeth 160 from the rear face of the wall 110 and L2 represents the thickness of the plate 400 at the level of the recesses 429.
  • the sum of the thickness of the membrane 300 and the height of the candles 340 must be greater than L3-L4, a relationship in which L3 denotes the distance separating the snap face of the teeth 170 from the internal face of the wall 110 and L4 denotes the thickness of the printed circuit 500.
  • the structure comprises from the front to the rear of the system, the wall 110, the sealing membrane 700, the membrane forming the keyboard 300, the plate forming the prism 400 and the printed circuit 500.
  • the electrical connection between the pairs of conductive pads 528 resulting from the actuation of a key 320 is used according to any technique known to those skilled in the art.
  • the light coming from the light sources 580 is guided by the plate 400 towards the respective keys 320 into which it penetrates at the level of the fingers 326.
  • the waterproofing membrane 700 provided with a colored pigment can be replaced with any equivalent coating or varnish deposited directly on the front face of the membrane 300 forming a keyboard.
  • the membrane 300 can also be adapted to ensure automatic take-up of the closing clearances, by elasticity, between the front cover 100 and the rear bottom 200.
  • the front face 110 of the cover 100 can be curved.
  • the keys 320 can be the subject of numerous variant embodiments as regards their geometry.
  • front panel style of the system can be the subject of numerous variations.
  • the sealing membrane 700, or the coating deposited directly on the front face of the membrane forming the keyboard 300 can be adapted to define keys with black appearance by day and white by night, or even keys with black appearance. by day and surrounded by a white border at night.
  • the elastic snap teeth 160 ensuring the immobilization of the plate 400 are provided with display means making it possible to control the snap-fastening of this plate 400.
  • these teeth 160 which project forward and inward of the cover 100, as indicated above, are placed opposite the side windows 151 formed in the peripheral skirt 150 of the cover 100. These windows 151 allow the necessary deformations teeth 160.
  • each tooth 160 is provided, at its free end, closest to the front wall 110 of the cover 100, with a viewing heel 164 which projects into said associated window 151. At rest these heels 164 extend in a general direction perpendicular to the skirt 150. More precisely, the length of this heel 164 is adapted so that its end face 166 is flush with the external surface 153 of the peripheral skirt 150, in the rest position teeth 160 and therefore when the plate 400 is correctly engaged on these teeth 160, as can be seen in FIGS. 15 and 16. On the contrary, the heels 164 protrude from the external surface 153 of the peripheral skirt 150 when the plate 400 is not correctly engaged on the teeth 160 and that consequently said plate 400 deforms these teeth 160.
  • the means for displaying the correct snap-fit of the teeth 160 and / or 170 can be formed by the deformation of the walls of the skirt 150 of the cover 100, carrying these teeth.
  • the printed facade 600 and / or the cover 100 and / or the membrane 300 can be produced using a bi-material or tri-material co-molding or overmolding. . This arrangement simplifies the manufacturing process of the system.

Abstract

The present invention relates to a control keyboard for an electric or electronic system, in particular an anti-theft system for a motor vehicle, characterised in that it comprises: a box (100, 200) which houses: a printed circuit (500), a membrane made of silicon-type elastic material provided with conducting regions (328) for controlled linking of associated conducting regions (528) provided on the printed circuit (500), and an optical prism plate (400) forming a diffuser suitable for illuminating the keyboard, in which the prism plate (400) and the printed circuit (500) are clipped into the box (100, 200), and the silicon membrane (300) holds both the prism plate (300) and the printed circuit (500) in position. <IMAGE>

Description

La présente invention concerne le domaine des claviers de commande de systèmes électriques ou électroniques.The present invention relates to the field of keyboards for controlling electrical or electronic systems.

La présente invention trouve notamment application dans la réalisation d'un système antivol pour véhicule automobile, comprenant un clavier de commande, et un circuit apte à agir sur au moins un organe actif du véhicule, par exemple des moyens d'injection, pour invalider celui-ci, à défaut d'introduction d'un code prédéterminé à l'aide du clavier dans un délai prédéfini.The present invention finds particular application in the production of an anti-theft system for a motor vehicle, comprising a control keyboard, and a circuit capable of acting on at least one active member of the vehicle, for example injection means, to invalidate that -ci, failing to introduce a predetermined code using the keyboard within a predefined period.

De nombreux claviers de commande ont déjà été proposés.Many control keyboards have already been proposed.

En particulier, on connaît aujourd'hui des claviers de commande comprenant :

  • un boîtier pourvu sur sa face avant de plusieurs ouvertures aptes à recevoir chacune une touche respective,
  • un circuit imprimé logé fixe dans le boîtier et
  • une membrane silicone intercalée entre les touches et le circuit imprimé et munie de plages conductrices aptes à relier des plages associées sur le circuit imprimé lors de l'actionnement de touches.
In particular, control keyboards are known today comprising:
  • a housing provided on its front face with several openings adapted to each receive a respective key,
  • a printed circuit housed fixed in the housing and
  • a silicone membrane interposed between the keys and the printed circuit and provided with conductive pads capable of connecting associated pads on the printed circuit when the keys are actuated.

De tels claviers sont par exemple divulgués dans les documents FR-A-2669462 et FR-A-2647588, selon lesquels les touches sont intégrées à la membrane.Such keyboards are for example disclosed in documents FR-A-2669462 and FR-A-2647588, according to which the keys are integrated into the membrane.

Ces claviers connus ne donnent cependant pas totalement satisfaction.These known keyboards are not entirely satisfactory, however.

La présente invention a pour but principal de perfectionner les systèmes de claviers existants.The main object of the present invention is to improve existing keyboard systems.

Plus précisément, des buts auxiliaires de la présente invention sont :

  • d'améliorer l'étanchéité des claviers aux agents extérieurs, et notamment à la poussière,
  • de réaliser un clavier économique,
  • de réaliser un clavier qui soit facile d'assemblage,
  • de réaliser un clavier éclairé,
  • de réaliser un clavier de faible encombrement.
More specifically, auxiliary aims of the present invention are:
  • improve the tightness of keyboards to external agents, and in particular to dust,
  • to make an economical keyboard,
  • to make a keyboard that is easy to assemble,
  • to make an illuminated keyboard,
  • to create a compact keyboard.

Ces différents buts sont atteints dans le cadre de la présente invention grâce à un clavier de commande, notamment pour système antivol pour véhicule automobile, du type comprenant :
- un boîtier qui loge :

  • . un circuit imprimé,
  • . une membrane en matériau élastique type silicone, pourvue de plages conductrices pour relier sur commande des plages conductrices associées prévues sur le circuit imprimé, et
  • . une platine prisme optique formant diffuseur adaptée pour assurer l'éclairage du clavier,
    dans lequel la platine prisme et le circuit imprimé sont encliquetés dans le boîtier et la membrane silicone assure à la fois le calage de la platine prisme et du circuit imprimé.
These various aims are achieved in the context of the present invention by means of a control keyboard, in particular for an anti-theft system for a motor vehicle, of the type comprising:
- a housing that houses:
  • . a printed circuit,
  • . a membrane of elastic silicone-type material, provided with conductive pads for connecting, on command, associated conductive pads provided on the printed circuit, and
  • . an optical prism plate forming a diffuser suitable for lighting the keyboard,
    in which the prism board and the printed circuit are snapped into the housing and the silicone membrane ensures both the setting of the prism board and the printed circuit.

D'autres caractéristiques, buts et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre, et en regard des dessins annexés donnés à titre d'exemple non limitatif et sur lesquels :

  • la figure 1 représente une vue schématique éclatée en perspective d'un clavier conforme à un mode de réalisation préférentiel de la présente invention,
  • la figure 2 représente une vue partielle en perspective du même clavier,
  • les figures 3A, 3B et 3C représentent, selon une vue en coupe transversale, trois variantes de réalisation d'une touche pour le clavier conforme à la présente invention,
  • la figure 4 représente une vue en perspective avant d'un capot du clavier conforme à la présente invention,
  • la figure 5 représente une vue en plan d'une façade imprimée du clavier conforme à la présente invention,
  • les figures 6 et 7 représentent deux vues en perspective respectivement avant et arrière d'une membrane utilisée dans le clavier conforme à la présente invention,
  • la figure 8 représente une vue en perspective avant d'une platine prisme optique formant diffuseur conforme à la présente invention,
  • la figure 9 représente une vue en perspective d'une membrane additionnelle d'étanchéité susceptible d'être utilisée dans le cadre de la présente invention,
  • les figures 10, 11 et 12 représentent trois vues en coupe du capot conforme à la présente invention selon les plans de coupe référencés X-X, XI-XI et XII,XII sur la figure 4,
  • les figures 13 et 14 représentent deux vues en coupe orthogonale entre elles d'un clavier assemblé conforme à la présente invention,
  • la figure 15 représente une vue en coupe du capot conforme à une variante de réalisation de la présente invention, selon un plan de coupe similaire à la figure 10, et
  • la figure 16 représente une vue de détail agrandie de ce capot en coupe et illustre l'engagement de la platine prisme optique sur ce capot.
Other characteristics, aims and advantages of the present invention will appear on reading the detailed description which follows, and with reference to the appended drawings given by way of nonlimiting example and in which:
  • FIG. 1 represents a schematic exploded perspective view of a keyboard according to a preferred embodiment of the present invention,
  • FIG. 2 represents a partial perspective view of the same keyboard,
  • FIGS. 3A, 3B and 3C represent, in a cross-sectional view, three alternative embodiments of a key for the keyboard according to the present invention,
  • FIG. 4 represents a front perspective view of a keyboard cover according to the present invention,
  • FIG. 5 represents a plan view of a printed front of the keyboard according to the present invention,
  • FIGS. 6 and 7 represent two perspective views, respectively front and rear, of a membrane used in the keyboard according to the present invention,
  • FIG. 8 represents a front perspective view of an optical prism plate forming a diffuser in accordance with the present invention,
  • FIG. 9 represents a perspective view of an additional sealing membrane capable of being used in the context of the present invention,
  • FIGS. 10, 11 and 12 represent three sectional views of the cover according to the present invention according to the sectional planes referenced XX, XI-XI and XII, XII in FIG. 4,
  • FIGS. 13 and 14 show two views in orthogonal section between them of an assembled keyboard according to the present invention,
  • FIG. 15 represents a sectional view of the cover according to an alternative embodiment of the present invention, according to a section plane similar to FIG. 10, and
  • FIG. 16 represents an enlarged detail view of this cover in section and illustrates the engagement of the optical prism plate on this cover.

Comme on le voit sur les figures annexées, le clavier conforme à la présente invention comprend essentiellement :

  • un boîtier formé par assemblage d'un capot avant 100 et d'un fond arrière 200,
  • une membrane 300 en matériau élastique formant clavier,
  • une platine/prisme optique formant diffuseur 400, et
  • un circuit imprimé 500.
As can be seen in the appended figures, the keyboard according to the present invention essentially comprises:
  • a housing formed by assembling a front cover 100 and a rear bottom 200,
  • a membrane 300 of elastic material forming a keyboard,
  • an optical plate / prism forming a diffuser 400, and
  • a printed circuit 500.

Le cas échéant, comme on l'explicitera par la suite, le clavier conforme à la présente invention peut être complété par une façade imprimée 600 visible sur la figure 5 et une membrane additionnelle d'étanchéité 700, visible sur la figure 9.Where appropriate, as will be explained below, the keyboard according to the present invention can be completed by a printed front 600 visible in FIG. 5 and an additional sealing membrane 700 visible in FIG. 9.

Le capot 100 et le fond 200 constituant le boîtier peuvent faire l'objet de nombreuses variantes de réalisation. De préférence, ils sont réalisés par moulage en matière plastique.The cover 100 and the bottom 200 constituting the housing can be the subject of numerous variant embodiments. Preferably, they are produced by plastic molding.

Bien que le contour du capot 100 et du fond 200 puisse faire l'objet également de nombreuses variantes, de préférence, ceux-ci présentent un contour rectangulaire, comme on le voit sur les figures annexées.Although the outline of the cover 100 and the bottom 200 can also be the subject of numerous variants, preferably, these have a rectangular outline, as can be seen in the appended figures.

Le capot 100 comprend plus précisément une paroi 110 généralement plane formant la face avant du clavier, entourée d'une jupe rectangulaire 150 en saillie sur sa face arrière.The cover 100 more precisely comprises a generally flat wall 110 forming the front face of the keyboard, surrounded by a rectangular skirt 150 projecting from its rear face.

De préférence, la paroi 110 est munie sur sa face avant, d'une nervure d'encadrement périphérique 113 dont la hauteur est égale à l'épaisseur de la façade imprimée 600.Preferably, the wall 110 is provided on its front face with a peripheral framing rib 113 whose height is equal to the thickness of the printed facade 600.

La paroi avant 110 est pourvue de plusieurs ouvertures.The front wall 110 is provided with several openings.

Tout d'abord, la paroi 110 est munie de plusieurs ouvertures 120 destinées à recevoir chacune une touche associée 320 prévue sur la membrane 300.First of all, the wall 110 is provided with several openings 120 intended to each receive an associated key 320 provided on the membrane 300.

De préférence ces ouvertures 120 sont disposées régulièrement selon une matrice de lignes et colonnes sur la paroi 110.Preferably these openings 120 are regularly arranged in a matrix of rows and columns on the wall 110.

Plus précisément, selon le mode de réalisation particulier et non limitatif représenté sur les figures annexées adapté à un clavier à douze touches 320, la paroi 110 comporte douze ouvertures 120 disposées selon quatre colonnes de trois rangées.More specifically, according to the particular and nonlimiting embodiment shown in the appended figures adapted to a twelve-key keyboard 320, the wall 110 has twelve openings 120 arranged in four columns of three rows.

Bien entendu, la section des ouvertures 120 doit être complémentaire de la section droite des touches 320. Selon le mode de réalisation particulier non limitatif représenté sur les figures annexées, les ouvertures 120 sont de forme oblongue arrondie.Of course, the section of the openings 120 must be complementary to the cross section of the keys 320. According to the particular nonlimiting embodiment shown in the appended figures, the openings 120 are of rounded oblong shape.

De préférence, la paroi 110 possède en outre une seconde série d'ouvertures 122 conçue pour être placée en regard de symboles 622 respectivement associés formés sur la façade imprimée 600. De préférence, un symbole 622 et par conséquent une ouverture 122 sont associés respectivement à chaque touche 320. La géométrie des ouvertures 122 peut faire l'objet de nombreuses variantes de réalisation.Preferably, the wall 110 also has a second series of openings 122 designed to be placed opposite respectively associated symbols 622 formed on the printed facade 600. Preferably, a symbol 622 and consequently an opening 122 are associated respectively with each key 320. The geometry of the openings 122 can be the subject of numerous variant embodiments.

On notera également à l'examen des figures annexées, la présence dans la paroi avant 110 de deux ouvertures additionnelles cylindriques 124. Ces ouvertures 124 sont de préférence placées latéralement par rapport à la matrice d'ouverture 120 recevant les touches 320. Les ouvertures 124 sont conçues pour recevoir des témoins portés par le circuit imprimé 500 pour la visualisation de l'état du circuit de commande.It will also be noted on examining the appended figures, the presence in the front wall 110 of two additional cylindrical openings 124. These openings 124 are preferably placed laterally with respect to the opening matrix 120 receiving the keys 320. The openings 124 are designed to receive indicators carried by the printed circuit 500 for viewing the state of the control circuit.

De préférence, ces ouvertures 124 sont entourées chacune par un fourreau cylindrique 126 en saillie sur la face arrière de la paroi 110.Preferably, these openings 124 are each surrounded by a cylindrical sheath 126 projecting from the rear face of the wall 110.

La paroi 110 est également munie avantageusement, sur sa face arrière de pions en saillie 116, par exemple cylindriques, conçus pour assurer le centrage de la platine 400. Selon le mode de réalisation particulier représenté sur les figures annexées, il est ainsi prévu deux pions de centrage 116 sur la face arrière de la paroi 110.The wall 110 is also advantageously provided, on its rear face with protruding pins 116, for example cylindrical, designed to ensure the centering of the plate 400. According to the embodiment particular shown in the accompanying figures, two centering pins 116 are thus provided on the rear face of the wall 110.

Le capot avant 100 et le fond arrière 200 peuvent être immobilisés par tout moyen connu approprié, par exemple par collage, soudure aux ultrasons, vissage, etc ...The front cover 100 and the rear bottom 200 can be immobilized by any suitable known means, for example by gluing, ultrasonic welding, screwing, etc.

Cependant, de préférence, dans le cadre de la présente invention, le capot 100 et le fond arrière 200 sont assemblés par encliquetage.However, preferably, in the context of the present invention, the cover 100 and the rear bottom 200 are snapped together.

A cet effet, le capot avant 100 est muni de préférence, au niveau de la jupe 150, de quatre languettes élastiques 152 pourvues chacune d'une denture 154, aptes à venir en prise avec un logement respectif 254 formé dans le fond arrière 200.To this end, the front cover 100 is preferably provided, at the level of the skirt 150, with four elastic tabs 152 each provided with a toothing 154, capable of engaging with a respective housing 254 formed in the rear bottom 200.

Le capot avant 100 possède en outre, au niveau de sa jupe périphérique 150, des structures d'encliquetage de la platine 400 et du circuit imprimé 500.The front cover 100 also has, at its peripheral skirt 150, snap-fastening structures for the plate 400 and the printed circuit 500.

Plus précisément, selon le mode de réalisation particulier et non limitatif représenté sur les figures annexées, il est prévu, dans la paroi de la jupe périphérique 150, quatre dentures élastiques d'encliquetage 160 pour l'immobilisation de la platine 400.More specifically, according to the particular and nonlimiting embodiment shown in the appended figures, there are provided, in the wall of the peripheral skirt 150, four elastic snap teeth 160 for the immobilization of the plate 400.

Plus précisément encore, il est ainsi prévu une paire de dentures d'encliquetage 160 sur chacun des deux grands côtés de la jupe 150. Ces dentures d'encliquetage 160 se raccordent sur la paroi périphérique 150 au voisinage de la bordure arrière de celle-ci et font saillie à la fois vers l'avant et vers l'intérieur du capot 100.More precisely still, a pair of snap teeth 160 is thus provided on each of the two long sides of the skirt 150. These snap teeth 160 are connected to the peripheral wall 150 in the vicinity of the rear edge thereof. and protrude both forwards and inwards from the cover 100.

De préférence, la jupe périphérique 150 est également pourvue de murets internes 162 permettant de guider et de positionner la platine 400. Ces murets 162 s'étendent perpendiculairement à la paroi 110.Preferably, the peripheral skirt 150 is also provided with internal walls 162 making it possible to guide and position the plate 400. These walls 162 extend perpendicularly to the wall 110.

La jupe périphérique 150 possède en outre des dentures d'encliquetage 170 pour le circuit imprimé 500. Il est ainsi prévu de préférence une denture 170 sur au moins trois côtés de la jupe périphérique 150.The peripheral skirt 150 also has snap teeth 170 for the printed circuit 500. There is thus preferably provided a toothing 170 on at least three sides of the peripheral skirt 150.

Bien entendu, les dentures 170 sont situées à une distance de la paroi 110 supérieure à la distance séparant cette paroi des dentures 160 précitées conçues pour immobiliser la platine 400. Les dentures 170 sont de préférence venues de moulage sur la face interne de la jupe périphérique 150, comme on le voit notamment figure 10 et figure 12.Of course, the teeth 170 are located at a distance from the wall 110 greater than the distance separating this wall from the aforementioned teeth 160 designed to immobilize the plate 400. The teeth 170 are of preferably molded on the inner face of the peripheral skirt 150, as seen in particular in Figure 10 and Figure 12.

Comme on le voit en particulier sur les figures 10 à 12, la jupe 150 peut être pourvue sur sa face interne de diverses nervures 156 orthogonales à la paroi 110. Ces nervures 156 peuvent servir de guidage et d'appui au circuit imprimé 500.As can be seen in particular in FIGS. 10 to 12, the skirt 150 can be provided on its internal face with various ribs 156 orthogonal to the wall 110. These ribs 156 can serve as guidance and support for the printed circuit 500.

Le fond arrière 200 peut faire l'objet de nombreuses variantes de réalisation. Il présente une géométrie complémentaire du capot avant 100. Pour l'essentiel, le fond arrière 200 comprend une paroi généralement plane arrière 210 entourée d'une jupe périphérique 250 de même géométrie que la jupe périphérique 150 du capot avant 100.The rear bottom 200 can be the subject of numerous variant embodiments. It has a complementary geometry of the front cover 100. Essentially, the rear bottom 200 comprises a generally flat rear wall 210 surrounded by a peripheral skirt 250 of the same geometry as the peripheral skirt 150 of the front cover 100.

Les ouvertures 254 destinées à recevoir les languettes élastiques 152 sont formées dans la jupe périphérique 250.The openings 254 intended to receive the elastic tongues 152 are formed in the peripheral skirt 250.

On notera que de préférence, le fond arrière 200 possède un logement 220 conçu pour recevoir un connecteur 520 porté par le circuit imprimé 500.It will be noted that preferably, the rear bottom 200 has a housing 220 designed to receive a connector 520 carried by the printed circuit 500.

La membrane 300 est réalisée de préférence en matériau silicone ou équivalent. Plus précisément, la membrane 300 est composée essentiellement d'un matériau élastique électriquement non conducteur.The membrane 300 is preferably made of silicone material or equivalent. More specifically, the membrane 300 is essentially composed of an electrically non-conductive elastic material.

La membrane 300 assure trois fonctions essentielles de base.The membrane 300 performs three basic essential functions.

La première fonction de la membrane 300 est d'assurer le contactage sur le circuit imprimé 500 lors de la sollicitation d'une touche 320.The first function of the membrane 300 is to ensure contacting on the printed circuit 500 when a key 320 is pressed.

La seconde fonction de la membrane 300 est d'assurer le calage de la platine 400 et du circuit imprimé 500.The second function of the membrane 300 is to ensure the timing of the plate 400 and the printed circuit 500.

Enfin, la troisième fonction de la membrane 300 est d'assurer l'étanchéité du système.Finally, the third function of the membrane 300 is to seal the system.

La membrane 300 comprend essentiellement une feuille plane 310 qui porte une pluralité de touches d'actionnement 320 en nombre égal au nombre d'ouvertures 120 prévues dans la face avant 110 du boîtier. Les touches 320 sont ainsi placées sur la feuille 310 selon une disposition en matrice identique à celle des ouvertures 120 dans la paroi 110.The membrane 300 essentially comprises a flat sheet 310 which carries a plurality of actuating keys 320 in a number equal to the number of openings 120 provided in the front face 110 of the housing. The keys 320 are thus placed on the sheet 310 in a matrix arrangement identical to that of the openings 120 in the wall 110.

Les touches 320 sont venues de moulage avec la feuille 310.The keys 320 came from molding with the sheet 310.

Les touches 320 peuvent faire l'objet de nombreuses variantes de réalisation connues de l'homme de l'art, telles que décrites par exemple dans les documents de l'état de la technique FR-A-2669462 et FR-A-2647588.The keys 320 can be the subject of numerous variant embodiments known to those skilled in the art, as described for example in the documents of the state of the art FR-A-2669462 and FR-A-2647588.

Chaque touche 320 comprend principalement un pavé 322 d'enveloppe arrondie, en saillie sur la face avant de la feuille 310. La section droite, parallèlement à la feuille 310, de chaque pavé 322, est complémentaire de la section droite des ouvertures 120. Chaque pavé 322 est relié à la feuille 310 environnante par l'intermédiaire d'une lèvre cloquante d'allure tronconique 324.Each key 320 mainly comprises a block 322 of rounded envelope, projecting from the front face of the sheet 310. The cross section, parallel to the sheet 310, of each block 322, is complementary to the cross section of the openings 120. Each block 322 is connected to the surrounding sheet 310 by means of a blistering lip of frustoconical shape 324.

De façon connue en soi, la fonction de cette lèvre de liaison 324 entre la feuille 310 et chaque pavé 322 est d'autoriser un déplacement brusque de chaque touche 320 lorsque l'effort exercé sur celle-ci dépasse un seuil prédéterminé.In a manner known per se, the function of this connecting lip 324 between the sheet 310 and each block 322 is to authorize an abrupt movement of each key 320 when the force exerted on it exceeds a predetermined threshold.

Généralement les lèvres de liaison 324 sont, au repos, concaves vers l'arrière de la membrane 300 de sorte que l'effet cloquant des touches 320 soit obtenu par inversion de concavité de ces lèvres de liaison 324.Generally, the connecting lips 324 are, at rest, concave towards the rear of the membrane 300 so that the blistering effect of the keys 320 is obtained by reversing the concavity of these connecting lips 324.

En outre, chaque pavé 322 se prolonge par un doigt central 326, par exemple cylindrique, en saillie sur la face arrière de la membrane 300.In addition, each block 322 is extended by a central finger 326, for example cylindrical, projecting from the rear face of the membrane 300.

L'extrémité arrière de chaque doigt 326 est ainsi placée en regard du circuit imprimé 500. Cette extrémité arrière de chaque doigt 326 est pourvue d'une pastille 328 en matériau électriquement conducteur, par exemple de carbone ou tout autre matériau électriquement conducteur, tel que par exemple un métal noble. Les pastilles 328 peuvent être surmoulées ou sérigraphiées, ou encore déposées par tout moyen équivalent sur l'extrémité arrière des doigts 326.The rear end of each finger 326 is thus placed opposite the printed circuit 500. This rear end of each finger 326 is provided with a pad 328 of electrically conductive material, for example carbon or any other electrically conductive material, such as for example a noble metal. The pellets 328 can be overmolded or screen printed, or else deposited by any equivalent means on the rear end of the fingers 326.

On notera que la membrane 310 est pourvue sur sa face avant d'un réseau de rainures 330. Ces rainures 330 communiquent, d'une part entre elles, d'autre part communiquent avec les cavités 332 délimitées autour de chaque pavé 322 par les lèvres cloquantes de liaison 324.It will be noted that the membrane 310 is provided on its front face with a network of grooves 330. These grooves 330 communicate, on the one hand with each other, on the other hand communicate with the cavities 332 delimited around each block 322 by the lips link blisters 324.

Plus précisément, selon le mode de réalisation particulier représenté sur la figure 6, il est ainsi prévu deux séries de rainures orthogonales 330 qui encadrent chaque touche 320. Ces rainures 330 sont utilisées en particulier lorsque le clavier incorpore une membrane additionnelle d'étanchéité 700 sur l'avant de la membrane clavier 300, pour éviter les effets néfastes de succion pouvant résulter de la juxtaposition de deux membranes étanches.More specifically, according to the particular embodiment shown in FIG. 6, two series of orthogonal grooves 330 are provided, which surround each key 320. These grooves 330 are used in particular when the keyboard incorporates an additional sealing membrane 700 on the front of the keyboard membrane 300, to avoid the harmful suction effects which may result from the juxtaposition of two waterproof membranes.

On notera également que, comme on le voit sur les figures 6 et 7, la feuille 310 est pourvue sur sa face arrière de plusieurs chandelles orthogonales 340 en saillie.It will also be noted that, as can be seen in FIGS. 6 and 7, the sheet 310 is provided on its rear face with several projecting orthogonal candles 340.

Plus précisément, selon le mode de réalisation préférentiel représenté sur les figures annexées, il est prévu une chandelle 340 à proximité de chacun des quatre coins de la face arrière de la membrane 300.More specifically, according to the preferred embodiment shown in the appended figures, a candle 340 is provided near each of the four corners of the rear face of the membrane 300.

Plus précisément, une première chandelle 341 est formée d'un pion plein de section droite carrée.More specifically, a first candle 341 is formed of a solid pawn of square cross section.

Une seconde chandelle 342 est formée d'un pion plein de section droite rectangulaire.A second candle 342 is formed from a solid pawn of rectangular cross section.

En revanche, les deux autres chandelles 343, 344 sont formées de cheminées cylindriques creuses. Ces cheminées cylindriques 343, 344 sont placées en regard des ouvertures 124 formées dans la paroi 110. Elles sont destinées à recevoir les témoins de visualisation d'état du système.In contrast, the other two candles 343, 344 are formed of hollow cylindrical chimneys. These cylindrical chimneys 343, 344 are placed opposite the openings 124 formed in the wall 110. They are intended to receive the indicators for displaying the state of the system.

Les chandelles 340 sont destinées à supporter, par leur face arrière, et par conséquent à câler, le circuit imprimé 500, lorsque celui-ci est encliqueté dans les dentures 170.The candles 340 are intended to support, by their rear face, and consequently to wire, the printed circuit 500, when the latter is snapped into the teeth 170.

La membrane 300 est également munie de préférence de fûts cylindriques 350 destinés à recevoir les pions de centrage 116 et assurer l'étanchéité sur ceux-ci. Les fûts 350 font saillie sur la face arrière de la membrane 300.The membrane 300 is also preferably provided with cylindrical barrels 350 intended to receive the centering pins 116 and seal them thereon. The barrels 350 protrude from the rear face of the membrane 300.

Comme indiqué précédemment, une seconde membrane 700 améliorant l'étanchéité, peut être disposée sur l'avant de la membrane formant clavier 300. Cette membrane d'étanchéité 700 possède avantageusement une épaisseur constante. Elle comprend essentiellement une feuille plane 710 pourvue d'un réseau de protubérances 720 de géométrie et de disposition complémentaires des pavés 322.As indicated above, a second membrane 700 improving the seal can be placed on the front of the keyboard membrane 300. This seal membrane 700 advantageously has a constant thickness. It essentially comprises a flat sheet 710 provided with a network of protrusions 720 of geometry and complementary arrangement of the blocks 322.

La membrane d'étanchéité 700 peut posséder des ouvertures placées en regard des ouvertures 122 de la paroi 110.The sealing membrane 700 may have openings placed opposite the openings 122 of the wall 110.

Elle possède en outre de préférence des ouvertures 724 placées en regard des ouvertures 124 de la paroi 110 et des ouvertures 716 recevant les pions de centrage 116.It also preferably has openings 724 placed opposite the openings 124 of the wall 110 and openings 716 receiving the centering pins 116.

Des découpes 762 ménagées sur le pourtour de la membrane 700 sont engagées sur les murets 162 du boîtier.Cutouts 762 formed on the periphery of the membrane 700 are engaged on the walls 162 of the housing.

La membrane d'étanchéité 700 est ainsi pincée entre la face interne de la paroi 110 et la membrane formant clavier 300.The sealing membrane 700 is thus pinched between the internal face of the wall 110 and the membrane forming the keyboard 300.

La membrane d'étanchéité 700 est formée avantageusement en matériau silicone translucide, chargé le cas échéant de pigments colorés, par exemple de pigments noirs, en fonction du style et de l'esthétique recherchés.The waterproofing membrane 700 is advantageously formed from translucent silicone material, loaded where appropriate with colored pigments, for example black pigments, depending on the style and aesthetics sought.

On notera que la présence de la membrane d'étanchéité 700 chargée de pigment, sur l'avant de la membrane formant clavier 300, permet d'améliorer l'homogénéité de l'éclairage, malgré la présence de sources discrètes pour assurer cet éclairage, sur le circuit imprimé 500.It will be noted that the presence of the waterproofing membrane 700 charged with pigment, on the front of the membrane forming the keyboard 300, makes it possible to improve the homogeneity of the lighting, despite the presence of discrete sources for ensuring this lighting, on the printed circuit 500.

Selon le mode de réalisation représenté sur les figures, la réalisation des dentures d'encliquetage 160, 170, par moulage, sur la jupe périphérique 150 du capot avant 100 entraîne la formation d'ouvertures 112 sur la face avant du boîtier.According to the embodiment shown in the figures, the production of the snap teeth 160, 170, by molding, on the peripheral skirt 150 of the front cover 100 results in the formation of openings 112 on the front face of the housing.

Pour éviter toute fuite de lumière à ce niveau, de préférence l'une au moins des deux membranes en silicone 300, 700 est pourvue de bourrelets ou lèvres périphériques adaptées pour obturer ces ouvertures 112.To avoid any light leakage at this level, preferably at least one of the two silicone membranes 300, 700 is provided with peripheral beads or lips adapted to close these openings 112.

Bien entendu, l'homme de l'art pourra également adapter de façon connue en soi la technique de moulage, des dentures 160,170 notamment par utilisation de tiroirs, pour éviter la formation de telles ouvertures 112, afin de parfaire l'étanchéité du dispositif. Il en est de même pour les ouvertures 254 du fond 200.Of course, those skilled in the art will also be able to adapt the molding technique in a manner known per se, teeth 160,170 in particular by the use of drawers, to avoid the formation of such openings 112, in order to perfect the sealing of the device. It is the same for the openings 254 of the bottom 200.

La platine 400 représentée sur la figure 8 est réalisée en un matériau optiquement transparent, par exemple en polycarbonate ou poly (méthacrylate) de méthyle. Cette pièce 400 est réalisée de préférence par moulage.The plate 400 shown in Figure 8 is made of an optically transparent material, for example polycarbonate or poly (methacrylate) methyl. This part 400 is preferably produced by molding.

Elle assure plusieurs fonctions.It performs several functions.

Son rôle principal est de guider la lumière issue de sources lumineuses 580 portées par le circuit imprimé 500 vers les symboles 622 de la façade imprimée 600.Its main role is to guide the light coming from light sources 580 carried by the printed circuit 500 towards the symbols 622 of the printed facade 600.

Une autre fonction de la platine 400 est de servir de support et de maintien à la feuille 310 de la membrane formant clavier 300 grâce à l'encliquetage sur les dentures 160.Another function of the plate 400 is to serve as support and support for the sheet 310 of the membrane forming the keyboard 300 by means of the snap-fastening on the teeth 160.

Une autre fonction de la platine 400 est de guider les touches 320 à translation perpendiculairement à la paroi 110.Another function of the plate 400 is to guide the keys 320 in translation perpendicular to the wall 110.

Une autre fonction de la platine 400 est de guider les chandelles de maintien 340 prévues sur la face arrière de la membrane 300.Another function of the plate 400 is to guide the holding candles 340 provided on the rear face of the membrane 300.

La platine 400 présente un contour complémentaire du volume interne du boîtier. Ainsi, la platine 400 présente de préférence un contour rectangulaire.The plate 400 has a complementary contour of the internal volume of the housing. Thus, the plate 400 preferably has a rectangular outline.

La platine 400 possède au moins un alésage traversant 480 destiné à recevoir une source lumineuse portée par le circuit imprimé 500. Cet alésage 480 est de préférence cylindrique de révolution autour d'un axe perpendiculaire au plan moyen de la platine 400 de sorte que la lumière issue de la source lumineuse 580 pénètre dans la platine 400 sans réfraction ni réflexion.The plate 400 has at least one through bore 480 intended to receive a light source carried by the printed circuit 500. This bore 480 is preferably cylindrical of revolution around an axis perpendicular to the mean plane of the plate 400 so that the light from the light source 580 penetrates into the plate 400 without refraction or reflection.

Plus précisément, selon le mode de réalisation préférentiel représenté sur la figure 8 annexée, la platine 400 possède deux alésages 480. Ces deux alésages 480 sont disposés sensiblement selon une diagonale de la matrice de touche 320, soit plus précisément au centre de deux groupes respectifs de quatre touches 320 situés sur des coins diagonalement opposés de cette matrice.More specifically, according to the preferred embodiment shown in Figure 8 attached, the plate 400 has two bores 480. These two bores 480 are arranged substantially along a diagonal of the key matrix 320, or more precisely in the center of two respective groups of four keys 320 located on diagonally opposite corners of this matrix.

Pour assurer l'encliquetage de la platine 400 sur les dentures élastiques 160, la platine 400 est de préférence pourvue d'oreilles en saillie 460. Il est ainsi prévu de préférence deux oreilles 460 en saillie respectivement sur chaque grand côté de la platine 400, conçues pour venir respectivement en prise avec une denture 160.To ensure the locking of the plate 400 on the elastic teeth 160, the plate 400 is preferably provided with projecting ears 460. It is thus preferably provided two ears 460 projecting respectively on each long side of the plate 400, designed to engage with teeth 160 respectively.

De préférence, ces oreilles 460 possèdent des bords d'engagement biseautés 462.Preferably, these ears 460 have beveled engagement edges 462.

Pour guider les doigts 326 de chaque touche 322, la platine 400 est pourvue d'une matrice d'alésages traversants 426 de section droite complémentaire desdits doigts 326. Ces alésages 426 sont prévus au centre de cavités 422 débouchant face avant sur la platine 400. Ces cavités 422 ont une section droite complémentaire des pavés 322, pour autoriser le déplacement cloquant de ceux-ci.To guide the fingers 326 of each key 322, the plate 400 is provided with a matrix of through bores 426 of cross section complementary to said fingers 326. These bores 426 are provided in the center of cavities 422 opening out on the front plate 400. These cavities 422 have a cross section complementary to the blocks 322, to allow the blistering movement of the latter.

De préférence, ces cavités 422 sont elles-mêmes entourées d'un décrochement annulaire 429 destinées à recevoir une nervure complémentaire 329 prévue face arrière de la membrane 300 sur la périphérie de chaque touche 320.Preferably, these cavities 422 are themselves surrounded by an annular recess 429 intended to receive a complementary rib 329 provided on the rear face of the membrane 300 on the periphery of each key 320.

La platine 400 possède en outre des ouvertures 441, 442, 443 et 444 respectivement complémentaires des chandelles 341, 342, 343, 344 et destinées à recevoir celles-ci. Enfin, la platine 400 possède des passages traversants 416 destinés à recevoir les doigts de centrage 116 complémentaires.The plate 400 also has openings 441, 442, 443 and 444 respectively complementary to the candles 341, 342, 343, 344 and intended to receive these. Finally, the plate 400 has through passages 416 intended to receive the complementary centering fingers 116.

De préférence, ces passages 416 et les pions 116 complémentaires sont étagés.Preferably, these passages 416 and the complementary pins 116 are stepped.

Pour éviter la fuite de lumière introduite par les ouvertures 480, sur la périphérie de la platine 400, celle-ci est de préférence pourvue sur son pourtour d'un prisme en toit. En d'autres termes, la tranche 410 de la platine 400 est de préférence formée de deux facettes 412, 414 symétriques par rapport à un plan médian de la platine 400, inclinées de l'ordre de 45° par rapport à ce plan médian et formant un dièdre convexe vers l'extérieur de la platine 400.To avoid the leakage of light introduced by the openings 480, on the periphery of the plate 400, the latter is preferably provided on its periphery with a roof prism. In other words, the wafer 410 of the plate 400 is preferably formed of two facets 412, 414 symmetrical with respect to a median plane of the plate 400, inclined on the order of 45 ° relative to this median plane and forming a convex dihedral towards the outside of the plate 400.

De préférence, il est prévu à proximité des cavités 422 destinées à recevoir les touches 320 les plus éloignées des passages 480 recevant les sources lumineuses 580, des surfaces de réflexion destinées à réfléchir la lumière canalisée par la platine 400 en direction des pavés 322 formant les touches. Ces surfaces de réflexion peuvent être formées de toute structure appropriée. Il s'agit par exemple de simples cavités tronconiques réalisées par moulage, à concavité débouchant sur la face arrière de la platine 400.Preferably, there are provided near the cavities 422 intended to receive the keys 320 furthest from the passages 480 receiving the light sources 580, reflection surfaces intended to reflect the light channeled by the plate 400 in the direction of the blocks 322 forming the keys. These reflection surfaces can be formed of any suitable structure. These are, for example, simple frustoconical cavities produced by molding, with a concavity opening onto the rear face of the plate 400.

Le nombre et la disposition de ces surfaces de réflexion sont déterminés en fonction de l'implantation particulière des touches sur la platine 400.The number and the arrangement of these reflection surfaces are determined according to the particular location of the keys on the plate 400.

Le circuit imprimé 500 peut faire l'objet de nombreuses variantes de réalisation. Sa structure ne sera donc pas décrite dans le détail par la suite.The printed circuit 500 can be the subject of numerous variant embodiments. Its structure will therefore not be described in detail below.

Il s'agit de préférence d'un circuit imprimé double face.It is preferably a double-sided printed circuit.

On distingue sur la figure 1 annexée, outre les sources lumineuses 580 précitées, et le connecteur 520, différents composants 510 ainsi qu'une matrice de paires de plages électriquement conductrices 528 placées respectivement en regard des pastilles 328 des touches 320. Ainsi, les paires 528 de plages électriquement conductrices sont court-circuitées lors de l'actionnement d'une touche 320 associée.In the appended FIG. 1, apart from the aforementioned light sources 580 and the connector 520, there are different components 510 and a matrix of pairs of electrically conductive pads 528. placed respectively opposite the pads 328 of the keys 320. Thus, the pairs 528 of electrically conductive pads are short-circuited upon actuation of an associated key 320.

La façade imprimée 600 représentée sur la figure 5 peut faire l'objet de nombreuses variantes de réalisation, selon le style de clavier recherché. De préférence, les symboles 622 sont réalisés par sérigraphie dans une feuille de matériau plastique, par exemple à base du matériau commercialisé sous la dénomination "LEXAN".The printed facade 600 shown in FIG. 5 can be the subject of numerous variant embodiments, depending on the style of keyboard sought. Preferably, the symbols 622 are produced by screen printing in a sheet of plastic material, for example based on the material sold under the name "LEXAN".

Outre les symboles 622 précités, la façade 600 possède des ouvertures 620 permettant le passage des touches 320, ainsi que des plages colorées 624 placées respectivement au regard des témoins lumineux portés par le circuit 500 et placés dans les cheminées 343, 344.In addition to the symbols 622 mentioned above, the front panel 600 has openings 620 allowing the passage of the keys 320, as well as colored areas 624 placed respectively with regard to the indicator lights carried by the circuit 500 and placed in the chimneys 343, 344.

Les sources lumineuses 580 portées par le circuit imprimé 500 peuvent être formées de tout moyen d'éclairage connu approprié, tel que par exemple des diodes électroluminescentes.The light sources 580 carried by the printed circuit 500 can be formed by any suitable known lighting means, such as for example light-emitting diodes.

Toutefois, dans le cadre de la présente invention, les sources lumineuses 580 sont formées de préférence de petites lampes à filament.However, in the context of the present invention, the light sources 580 are preferably formed from small filament lamps.

Celles-ci présentent l'avantage de délivrer une lumière blanche.These have the advantage of delivering white light.

Pour assurer l'assemblage du clavier conforme à la présente invention, on procède essentiellement comme suit.To ensure the assembly of the keyboard according to the present invention, the procedure is essentially as follows.

La membrane d'étanchéité 700, lorsque celle-ci est utilisée, est placée sur la face avant de la membrane 300 formant clavier et l'ensemble ainsi formé est disposé à l'intérieur du capot 100.The sealing membrane 700, when the latter is used, is placed on the front face of the membrane 300 forming the keyboard and the assembly thus formed is disposed inside the cover 100.

La platine support 400 est alors engagée dans le capot 100 en veillant à introduire les doigts 326 dans les ouvertures 426 et les chandelles 341, 342, 343, 344 dans les passages complémentaires 441, 442, 443 et 444. La platine 400 est immobilisée à l'intérieur du capot 100 dès que les oreilles 460 franchissent les dentures d'encliquetage 160. La platine 400 est alors câlée et exempte de tout jeu grâce au pinçage de la membrane 300 obtenu entre la face interne de la paroi 110 du capot et la platine support 400, au niveau des nervures 329 entourant chaque touche 320, dans le décrochement respectif 429 de la platine 400.The support plate 400 is then engaged in the cover 100, taking care to introduce the fingers 326 into the openings 426 and the candles 341, 342, 343, 344 in the complementary passages 441, 442, 443 and 444. The plate 400 is immobilized at the inside of the cover 100 as soon as the ears 460 cross the snap teeth 160. The plate 400 is then cabled and free from any play thanks to the pinching of the membrane 300 obtained between the internal face of the wall 110 of the cover and the support plate 400, at the ribs 329 surrounding each key 320, in the respective recess 429 of the plate 400.

Il faut noter que la hauteur des doigts 326 et des chandelles 340 est supérieure à l'épaisseur de la platine 400 de sorte que les doigts 326 et les chandelles 340 fassent saillie sur la face arrière de la platine 400.It should be noted that the height of the fingers 326 and of the candles 340 is greater than the thickness of the plate 400 so that the fingers 326 and the candles 340 protrude from the rear face of the plate 400.

Ainsi, d'une part les pastilles conductrices 328 formées de préférence de carbone sont situées sur l'arrière de la platine 400 et ne perturbent aucunement le cheminement de la lumière qui transite de la platine 400 dans les doigts 326 des touches 320 pour assurer l'éclairage de celles-ci.Thus, on the one hand the conductive pads 328 preferably formed of carbon are located on the rear of the plate 400 and in no way disturb the path of the light which passes from the plate 400 into the fingers 326 of the keys 320 to ensure the lighting of these.

D'autre part les chandelles 340 servent de support élastique au circuit imprimé 500.On the other hand, the candles 340 serve as an elastic support for the printed circuit 500.

Pour immobiliser celui-ci, il suffit par conséquent d'engager le circuit imprimé sur l'arrière de la platine 400, jusqu'à encliquetage de ce circuit imprimé 500 sur les dentures élastiques 170.To immobilize the latter, it therefore suffices to engage the printed circuit on the rear of the plate 400, until this printed circuit 500 clicks into place on the elastic teeth 170.

Bien entendu, pour assurer l'encliquetage efficace et exempt de jeu de la platine 400 et du circuit imprimé 500, l'épaisseur de la membrane 300 au niveau des nervures 329 doit être supérieure à L1-L2, relation dans laquelle L1 représente la distance séparant la face d'encliquetage des dents 160 de la face arrière de la paroi 110 et L2 représente l'épaisseur de la platine 400 au niveau des décrochements 429.Of course, to ensure effective and free play of the plate 400 and the printed circuit 500, the thickness of the membrane 300 at the ribs 329 must be greater than L1-L2, relationship in which L1 represents the distance separating the latching face of the teeth 160 from the rear face of the wall 110 and L2 represents the thickness of the plate 400 at the level of the recesses 429.

Par ailleurs, la somme de l'épaisseur de la membrane 300 et de la hauteur des chandelles 340 doit être supérieure à L3-L4, relation dans laquelle L3 désigne la distance séparant la face d'encliquetage des dents 170 de la face interne de la paroi 110 et L4 désigne l'épaisseur du circuit imprimé 500.Furthermore, the sum of the thickness of the membrane 300 and the height of the candles 340 must be greater than L3-L4, a relationship in which L3 denotes the distance separating the snap face of the teeth 170 from the internal face of the wall 110 and L4 denotes the thickness of the printed circuit 500.

Il reste ensuite à encliqueter le fond arrière 200 sur le capot avant 100 grâce aux languettes d'encliquetage 152.It then remains to snap the rear bottom 200 onto the front cover 100 using the snap-in tabs 152.

Une fois l'assemblage ainsi réalisé, la structure comprend de l'avant vers l'arrière du système, la paroi 110, la membrane d'étanchéité 700, la membrane formant clavier 300, la platine formant prisme 400 et le circuit imprimé 500.Once the assembly thus produced, the structure comprises from the front to the rear of the system, the wall 110, the sealing membrane 700, the membrane forming the keyboard 300, the plate forming the prism 400 and the printed circuit 500.

La liaison électrique entre les paires de plages conductrices 528 résultant de l'actionnement d'une touche 320 est exploitée selon toute technique connue de l'homme de l'art.The electrical connection between the pairs of conductive pads 528 resulting from the actuation of a key 320 is used according to any technique known to those skilled in the art.

La lumière issue des sources lumineuses 580 est guidée par la platine 400 vers les touches 320 respectives dans lesquelles elle pénètre au niveau des doigts 326.The light coming from the light sources 580 is guided by the plate 400 towards the respective keys 320 into which it penetrates at the level of the fingers 326.

Bien entendu la présente invention n'est pas limitée au mode de réalisation particulier qui vient d'être décrit mais s'étend à toute variante conforme à son esprit.Of course the present invention is not limited to the particular embodiment which has just been described but extends to any variant in accordance with its spirit.

Par exemple, la membrane d'étanchéité 700 pourvue d'un pigment coloré peut être remplacée de tout revêtement ou verni équivalent déposé directement sur la face avant de la membrane 300 formant clavier.For example, the waterproofing membrane 700 provided with a colored pigment can be replaced with any equivalent coating or varnish deposited directly on the front face of the membrane 300 forming a keyboard.

Par ailleurs, la membrane 300 peut également être adaptée pour assurer un rattrapage automatique des jeux de fermeture, par élasticité, entre le capot avant 100 et le fond arrière 200.Furthermore, the membrane 300 can also be adapted to ensure automatic take-up of the closing clearances, by elasticity, between the front cover 100 and the rear bottom 200.

Comme représenté sur la figure 2, la face avant 110 du capot 100 peut être bombée. Par ailleurs, comme représenté sur les figures 3A, 3B et 3C les touches 320 peuvent faire l'objet de nombreuses variantes de réalisation quant à leur géométrie.As shown in Figure 2, the front face 110 of the cover 100 can be curved. Furthermore, as shown in FIGS. 3A, 3B and 3C, the keys 320 can be the subject of numerous variant embodiments as regards their geometry.

De même, le style face avant du système peut faire l'objet de nombreuses variantes.Likewise, the front panel style of the system can be the subject of numerous variations.

Ainsi, la membrane d'étanchéité 700, ou le revêtement déposé directement sur la face avant de la membrane formant clavier 300 peuvent être adaptés pour définir des touches d'aspect noir le jour et blanc la nuit, ou encore des touches d'aspect noir le jour et entourées d'un liseré blanc la nuit.Thus, the sealing membrane 700, or the coating deposited directly on the front face of the membrane forming the keyboard 300 can be adapted to define keys with black appearance by day and white by night, or even keys with black appearance. by day and surrounded by a white border at night.

Selon la variante de réalisation représentée sur les figures 15 et 16, les dentures élastiques d'encliquetage 160 assurant l'immobilisation de la platine 400, sont munies de moyens de visualisation permettant de contrôler l'encliquetage de cette platine 400.According to the variant embodiment shown in FIGS. 15 and 16, the elastic snap teeth 160 ensuring the immobilization of the plate 400, are provided with display means making it possible to control the snap-fastening of this plate 400.

Plus précisément ces dentures 160 qui font saillie vers l'avant et vers l'intérieur du capot 100, comme indiqué précédemment, sont placées en regard de fenêtres latérales 151 formées dans la jupe périphérique 150 du capot 100. Ces fenêtres 151 autorisent les déformations nécessaires des dentures 160. Et chaque denture 160 est munie, au niveau de son extrémité libre, la plus proche de la paroi avant 110 du capot 100, d'un talon de visualisation 164 qui fait saillie dans ladite fenêtre 151 associée. Au repos ces talons 164 s'étendent dans une direction générale perpendiculaire à la jupe 150. Plus précisément la longueur de ce talon 164 est adaptée de sorte que sa face d'extrémité 166 affleure la surface extérieure 153 de la jupe périphérique 150, en position de repos des dentures 160 et par conséquent lorsque la platine 400 est correctement engagée sur ces dentures 160, comme on le voit sur les figures 15 et 16. Au contraire les talons 164 font saillie sur la surface extérieure 153 de la jupe périphérique 150 lorsque la platine 400 n'est pas correctement engagée sur les dentures 160 et que par conséquent ladite platine 400 déforme ces dentures 160.More precisely, these teeth 160 which project forward and inward of the cover 100, as indicated above, are placed opposite the side windows 151 formed in the peripheral skirt 150 of the cover 100. These windows 151 allow the necessary deformations teeth 160. And each tooth 160 is provided, at its free end, closest to the front wall 110 of the cover 100, with a viewing heel 164 which projects into said associated window 151. At rest these heels 164 extend in a general direction perpendicular to the skirt 150. More precisely, the length of this heel 164 is adapted so that its end face 166 is flush with the external surface 153 of the peripheral skirt 150, in the rest position teeth 160 and therefore when the plate 400 is correctly engaged on these teeth 160, as can be seen in FIGS. 15 and 16. On the contrary, the heels 164 protrude from the external surface 153 of the peripheral skirt 150 when the plate 400 is not correctly engaged on the teeth 160 and that consequently said plate 400 deforms these teeth 160.

On peut également envisager d'associer les dentures 170 assurant l'encliquetage du circuit imprimé 500 à des témoins similaires de visualisation de bon encliquetage.One can also consider associating the teeth 170 ensuring the snap-fastening of the printed circuit 500 with similar indicators of visualization of good snap-fastening.

Selon une autre variante, les moyens de visualisation du bon encliquetage des dentures 160 et/ou 170 peuvent être formés par la déformation des parois de la jupe 150 du capot 100, portant ces dentures.According to another variant, the means for displaying the correct snap-fit of the teeth 160 and / or 170 can be formed by the deformation of the walls of the skirt 150 of the cover 100, carrying these teeth.

Selon une autre caractéristique avantageuse de la présente invention, la façade imprimée 600 et/ou le capot 100 et/ou la membrane 300 peuvent être réalisé(e)s à l'aide d'un comoulage ou surmoulage bi-matière ou tri-matiére. Cette disposition permet de simplifier le processus de fabrication du système.According to another advantageous characteristic of the present invention, the printed facade 600 and / or the cover 100 and / or the membrane 300 can be produced using a bi-material or tri-material co-molding or overmolding. . This arrangement simplifies the manufacturing process of the system.

Claims (25)

Clavier de commande d'un système électrique ou électronique, notamment pour système antivol de véhicule automobile, caractérisé par le fait qu'il comprend :
- un boîtier (100, 200) qui loge : . un circuit imprimé (500) . une membrane (300) en matériau élastique type silicone pourvue de plages conductrices (328) pour relier sur commande des plages conductrices (528) associées prévues sur le circut imprimé (500) et . une platine prisme optique (400) formant diffuseur adaptée pour assurer l'éclairage du clavier,
dans lequel la platine prisme (400) et le circuit imprimé (500) sont encliquetés dans le boîtier (100, 200) et la membrane silicone (300) assure à la fois le calage de la platine prisme (300) et du circuit imprimé (500). Keyboard for controlling an electrical or electronic system, in particular for an anti-theft system for a motor vehicle, characterized in that it comprises:
- a housing (100, 200) which houses: . a printed circuit (500) . a membrane (300) of elastic silicone type material provided with conductive pads (328) for connecting, on command, associated conductive pads (528) provided on the printed circuit (500) and . an optical prism plate (400) forming a diffuser suitable for lighting the keyboard,
in which the prism board (400) and the printed circuit (500) are snapped into the housing (100, 200) and the silicone membrane (300) ensures both the setting of the prism board (300) and the printed circuit ( 500). Clavier selon la revendication 1, caractérisé par le fait qu'il comprend en outre une membrane étanche (700), type silicone, sur la face avant de la membrane (300) pourvue de plages électriquement conductrices (328).Keyboard according to claim 1, characterized in that it further comprises a waterproof membrane (700), silicone type, on the front face of the membrane (300) provided with electrically conductive pads (328). Clavier selon l'une des revendications 1 ou 2, caractérisé par le fait que le boîtier comprend une jupe (110) pourvue de dentures (160) assurant l'encliquetage de la platine (400).Keyboard according to one of claims 1 or 2, characterized in that the housing comprises a skirt (110) provided with teeth (160) ensuring the latching of the plate (400). Clavier selon l'une des revendications 1 à 3, caractérisé par le fait que le boîtier (100) comprend une jupe (110) pourvue de dentures (170) assurant l'encliquetage du circuit imprimé (500).Keyboard according to one of claims 1 to 3, characterized in that the housing (100) comprises a skirt (110) provided with teeth (170) ensuring the snap-fastening of the printed circuit (500). Clavier selon l'une des revendications 1 à 4, caractérisé par le fait que le boîtier (100) possède en outre des pions internes (116) assurant le centrage de la platine (400).Keyboard according to one of claims 1 to 4, characterized in that the housing (100) also has internal pins (116) ensuring the centering of the plate (400). Clavier selon l'une des revendications 1 à 5, caractérisé par le fait que la membrane (300) possède une structure assurant l'étanchéité sur les pions de centrage (116).Keyboard according to one of claims 1 to 5, characterized in that the membrane (300) has a structure ensuring sealing on the centering pins (116). Clavier selon l'une des revendications 1 à 6, caractérisé par le fait que la membrane (300) possède des chandelles en saillie (340) assurant le calage du circuit imprimé (500).Keyboard according to one of claims 1 to 6, characterized in that the membrane (300) has projecting candles (340) ensuring the setting of the printed circuit (500). Clavier selon la revendication 7, caractérisé par le fait que certaines au moins des chandelles (343, 344) sont adaptées pour recevoir des témoins lumineux.Keyboard according to claim 7, characterized in that at least some of the candles (343, 344) are adapted to receive indicator lights. Clavier selon l'une des revendications 1 à 8, caractérisé par le fait que la membrane (300, 700) possède des lèvres périphériques conçues pour obturer des ouvertures (112) formées face avant du boîtier, pour éviter toute fuite de lumière à ce niveau.Keyboard according to one of claims 1 to 8, characterized in that the membrane (300, 700) has peripheral lips designed to close openings (112) formed on the front face of the housing, to prevent any light leakage at this level . Clavier selon l'une des revendications 1 à 9, caractérisé par le fait que la platine (400) est pourvue d'au moins un orifice cylindrique destiné à recevoir une source lumineuse d'éclairage (580).Keyboard according to one of claims 1 to 9, characterized in that the plate (400) is provided with at least one cylindrical orifice intended to receive a light source of lighting (580). Clavier selon l'une des revendications 1 à 10, caractérisé par le fait que les sources d'éclairage sont formées de petites lampes à filament.Keyboard according to one of claims 1 to 10, characterized in that the lighting sources are formed from small filament lamps. Clavier selon l'une des revendications 1 à 11, caractérisé par le fait que la platine (400) est pourvue d'un prisme en toit (412, 414) sur sa périphérie.Keyboard according to one of claims 1 to 11, characterized in that the plate (400) is provided with a roof prism (412, 414) on its periphery. Clavier selon l'une des revendications 1 à 12, caractérisé par le fait que la platine (400) est pourvue d'oreilles en saillie (460), sur sa périphérie, adaptées pour venir en prise avec des dentures d'enclipsage complémentaires (160) prévues sur le boîtier (100).Keyboard according to one of claims 1 to 12, characterized in that the plate (400) is provided with protruding ears (460), on its periphery, adapted to engage with complementary clipping teeth (160 ) provided on the housing (100). Clavier selon l'une des revendications 1 à 13, caractérisé par le fait que la platine (400) possède des ouvertures traversantes (426) destinées à recevoir des doigts (326) solidaires de chaque touche (320) formée sur la membrane (300).Keyboard according to one of claims 1 to 13, characterized in that the plate (400) has through openings (426) intended to receive fingers (326) integral with each key (320) formed on the membrane (300) . Clavier selon la revendication 14, caractérisé par le fait que la hauteur des doigts (326) prévus sur chaque touche (320) de la membrane (300) est supérieure à l'épaisseur de la platine (300) de sorte que l'extrémité électriquement conductrice (328) de chaque doigt (326) fasse saillie sur l'arrière de la platine (400).Keyboard according to claim 14, characterized in that the height of the fingers (326) provided on each key (320) of the membrane (300) is greater than the thickness of the plate (300) so that the end electrically conductive (328) of each finger (326) protrudes from the rear of the plate (400). Clavier selon l'une des revendications 1 à 15, caractérisé par le fait que la platine (400) est pourvue d'ouvertures traversantes (440) destinées à recevoir des chandelles complémentaires (340) en saillies face arrière de la membrane (300).Keyboard according to one of claims 1 to 15, characterized in that the plate (400) is provided with through openings (440) intended to receive complementary candles (340) projecting from the rear face of the membrane (300). Clavier selon l'une des revendications 1 à 16, caractérisé par le fait que les chandelles (340) sont adaptées pour faire saillie face arrière de la platine (400) afin de supporter le circuit imprimé (500).Keyboard according to one of claims 1 to 16, characterized in that the candles (340) are adapted to project behind the plate (400) in order to support the printed circuit (500). Clavier selon l'une des revendications 1 à 17, caractérisé par le fait que la platine (400) possède sur la périphérie de chaque ouverture (426) conçue pour recevoir un doigt (326) des touches (320), une cavité annulaire (422) complémentaire de la section droite des touches.Keyboard according to one of claims 1 to 17, characterized in that the plate (400) has on the periphery of each opening (426) designed to receive a finger (326) keys (320), an annular cavity (422 ) complementary to the right section of the keys. Clavier selon la revendication 18, caractérisé par le fait que chaque cavité (422) est entourée d'un décrochement (429) complémentaire d'une nervure (329) prévue face arrière de la membrane (300).Keyboard according to claim 18, characterized in that each cavity (422) is surrounded by a recess (429) complementary to a rib (329) provided on the rear face of the membrane (300). Clavier selon la revendication 19, caractérisé par le fait que la membrane (300) est pincée entre la face interne du boîtier (100) et la platine (400), au niveau des nervures (329).Keyboard according to claim 19, characterized in that the membrane (300) is pinched between the internal face of the housing (100) and the plate (400), at the level of the ribs (329). Clavier selon l'une des revendications 1 à 20, caractérisé par le fait que la membrane (300) pourvue de plages électriquement conductrices (328) est munie d'un revêtement pigmenté sur sa face avant.Keyboard according to one of claims 1 to 20, characterized in that the membrane (300) provided with electrically conductive pads (328) is provided with a pigmented coating on its front face. Clavier selon l'une des revendications 1 à 21, caractérisé par le fait que la membrane (300) pourvue de plage électriquement conductrice assure en outre un rattrapage automatique des jeux de fermeture entre un capot avant et un fond arrière constituant le boîtier.Keyboard according to one of claims 1 to 21, characterized in that the membrane (300) provided with an electrically conductive pad also ensures automatic take-up of the closing clearances between a front cover and a rear bottom constituting the housing. Clavier selon l'une des revendications 3 ou 4, caractérisé par le fait que les dentures d'encliquetage (160, 170), sont munies de moyens de visualisation (164) permettant de contrôler l'encliquetage.Keyboard according to one of claims 3 or 4, characterized in that the latching teeth (160, 170) are provided with display means (164) making it possible to control the latching. Clavier selon la revendication 23, caractérisé par le fait que les dentures (160, 170) sont placées en regard de fenêtres latérales (151) formées dans le boîtier (100) et sont munies, au niveau de leur extrémité libre, d'un talon de visualisation (164) qui fait saillie dans ladite fenêtre (151 associée), la longueur de ce talon (164) étant adaptée de sorte que sa face d'extrémité (166) affleure la surface extérieure (153) du boîtier (100), en position d'encliquetage et que au contraire le talon (164) fasse saillie sur la surface extérieure (153) du boîtier (100) lorsque l'encliquetage n'est pas correctement réalisé.Keyboard according to claim 23, characterized in that the teeth (160, 170) are placed opposite side windows (151) formed in the housing (100) and are provided, at their free end, with a heel display (164) which projects into said window (151 associated), the length of this heel (164) being adapted so that its end face (166) is flush with the external surface (153) of the housing (100), in the latching position and, on the contrary, the heel (164) protrudes from the outer surface (153) of the housing (100) when the latching is not correctly carried out. Clavier selon l'une des revendications 1 à 24, caractérisé par le fait que une façade imprimée (600) et/ou le boîtier (100) et/ou la membrane (300) sont réalisé(e)s à l'aide d'un comoulage ou surmoulage bi-matière ou tri-matiére.Keyboard according to one of claims 1 to 24, characterized in that a printed front (600) and / or the housing (100) and / or the membrane (300) are produced using bi-material or tri-material co-molding or overmolding.
EP19940402123 1993-11-12 1994-09-23 Control keyboard for electric or electronic system, in particular anti-theft system for motor vehicles Expired - Lifetime EP0653768B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9313507A FR2712408B1 (en) 1993-11-12 1993-11-12 Keyboard for controlling an electric or electronic system, in particular for an anti-theft system for a motor vehicle.
FR9313507 1993-11-12

Publications (2)

Publication Number Publication Date
EP0653768A1 true EP0653768A1 (en) 1995-05-17
EP0653768B1 EP0653768B1 (en) 1997-11-19

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EP19940402123 Expired - Lifetime EP0653768B1 (en) 1993-11-12 1994-09-23 Control keyboard for electric or electronic system, in particular anti-theft system for motor vehicles

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EP (1) EP0653768B1 (en)
DE (1) DE69406897T2 (en)
FR (1) FR2712408B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0874304A2 (en) * 1997-04-26 1998-10-28 Mannesmann VDO Aktiengesellschaft Alphanumeric keyboard for motor vehicles
WO1999014777A1 (en) * 1997-09-15 1999-03-25 Robert Bosch Gmbh Part moulded by injection from a thermoplastic elastomer and method for producing same
WO1999024997A1 (en) * 1997-11-12 1999-05-20 Daewoo Electronics Co., Ltd. Push button for control panels
WO1999039067A1 (en) * 1998-02-02 1999-08-05 Ut Automotive Dearborn, Inc. Membrane keyless entry switch for vehicles
WO2002049863A1 (en) * 2000-12-19 2002-06-27 Decoma Exterior Trim Inc. Retainer clip for attaching components to a beltline molding
EP1264060A2 (en) * 1999-12-08 2002-12-11 Winfield Locks, Inc., doing business as Computerized Security Systems Electronic lock
EP1554163A1 (en) * 2002-10-25 2005-07-20 Key Safety Systems, Inc. Driver side airbag module with annular airbag
GB2411756B (en) * 2004-03-04 2007-08-01 Dione Plc Secure card reader
WO2011144513A1 (en) * 2010-05-18 2011-11-24 Behr-Hella Thermocontrol Gmbh Operator control unit for a vehicle

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GB2086804A (en) * 1980-11-04 1982-05-19 Standard Telephones Cables Ltd Keyblock assembly
US4638131A (en) * 1986-01-15 1987-01-20 General Motors Corporation Steering wheel pad keyboard switch assembly
GB2201038A (en) * 1987-02-06 1988-08-17 Burr Brown Corp Backlit keyboards
GB2219691A (en) * 1988-06-13 1989-12-13 Mitsubishi Electric Corp Keyboards
GB2266186A (en) * 1992-04-14 1993-10-20 Motorola Gmbh A keyboard.

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Publication number Priority date Publication date Assignee Title
GB2086804A (en) * 1980-11-04 1982-05-19 Standard Telephones Cables Ltd Keyblock assembly
US4638131A (en) * 1986-01-15 1987-01-20 General Motors Corporation Steering wheel pad keyboard switch assembly
GB2201038A (en) * 1987-02-06 1988-08-17 Burr Brown Corp Backlit keyboards
GB2219691A (en) * 1988-06-13 1989-12-13 Mitsubishi Electric Corp Keyboards
GB2266186A (en) * 1992-04-14 1993-10-20 Motorola Gmbh A keyboard.

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0874304A2 (en) * 1997-04-26 1998-10-28 Mannesmann VDO Aktiengesellschaft Alphanumeric keyboard for motor vehicles
EP0874304A3 (en) * 1997-04-26 2003-01-22 Siemens Aktiengesellschaft Alphanumeric keyboard for motor vehicles
WO1999014777A1 (en) * 1997-09-15 1999-03-25 Robert Bosch Gmbh Part moulded by injection from a thermoplastic elastomer and method for producing same
WO1999024997A1 (en) * 1997-11-12 1999-05-20 Daewoo Electronics Co., Ltd. Push button for control panels
US5957272A (en) * 1997-11-12 1999-09-28 Daewoo Electronics Co., Ltd. Push button for control panels
WO1999039067A1 (en) * 1998-02-02 1999-08-05 Ut Automotive Dearborn, Inc. Membrane keyless entry switch for vehicles
EP1264060A2 (en) * 1999-12-08 2002-12-11 Winfield Locks, Inc., doing business as Computerized Security Systems Electronic lock
EP1264060A4 (en) * 1999-12-08 2004-07-21 Winfield Locks Inc Doing Busin Electronic lock
WO2002049863A1 (en) * 2000-12-19 2002-06-27 Decoma Exterior Trim Inc. Retainer clip for attaching components to a beltline molding
EP1554163A1 (en) * 2002-10-25 2005-07-20 Key Safety Systems, Inc. Driver side airbag module with annular airbag
EP1554163A4 (en) * 2002-10-25 2007-02-21 Key Safety Systems Inc Driver side airbag module with annular airbag
GB2411756B (en) * 2004-03-04 2007-08-01 Dione Plc Secure card reader
US7988054B2 (en) 2004-03-04 2011-08-02 Verifone Israel Ltd. Secure card reader
WO2011144513A1 (en) * 2010-05-18 2011-11-24 Behr-Hella Thermocontrol Gmbh Operator control unit for a vehicle

Also Published As

Publication number Publication date
DE69406897T2 (en) 1998-05-28
EP0653768B1 (en) 1997-11-19
FR2712408A1 (en) 1995-05-19
FR2712408B1 (en) 1996-02-16
DE69406897D1 (en) 1998-01-02

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