EP0653768B1 - Steuertastenfeld für elektrische oder elektronische Systeme, insbesondere Anti-Diebstahlsysteme für Kraftfahrzeuge - Google Patents

Steuertastenfeld für elektrische oder elektronische Systeme, insbesondere Anti-Diebstahlsysteme für Kraftfahrzeuge Download PDF

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Publication number
EP0653768B1
EP0653768B1 EP19940402123 EP94402123A EP0653768B1 EP 0653768 B1 EP0653768 B1 EP 0653768B1 EP 19940402123 EP19940402123 EP 19940402123 EP 94402123 A EP94402123 A EP 94402123A EP 0653768 B1 EP0653768 B1 EP 0653768B1
Authority
EP
European Patent Office
Prior art keywords
fact
membrane
plate
keypad according
housing
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.)
Expired - Lifetime
Application number
EP19940402123
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English (en)
French (fr)
Other versions
EP0653768A1 (de
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
Magneti Marelli France SAS
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Filing date
Publication date
Application filed by Magneti Marelli France SAS filed Critical Magneti Marelli France SAS
Publication of EP0653768A1 publication Critical patent/EP0653768A1/de
Application granted granted Critical
Publication of EP0653768B1 publication Critical patent/EP0653768B1/de
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.
  • Document GB-A-2201038 describes another keyboard comprising a housing which houses a printed circuit, an optical prism plate forming a diffuser adapted to ensure the lighting of the keyboard, which plate carries a contact layer comprising electrically conductive tracks, and a membrane of elastic material on which are fixed conductive pads to connect on command associated conductive tracks provided on the contact layer.
  • the main object of the present invention is to improve existing keyboard systems.
  • control keyboard in particular for an anti-theft system for a motor vehicle, of the type defined in appended claim 1, which is delimited in the form of a preamble and characterizing part with respect to the document GB -A- 2 201 038.
  • 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 pass through the latching teeth 160.
  • the plate 400 is then cabled and free of 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 teeth 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.

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  • Push-Button Switches (AREA)

Claims (25)

  1. Steuertastenfeld für elektrische oder elektronische Systeme, insbesondere für Anti-Diebstahlsysteme für Kraftfahrzeuge, umfassend:
    - ein Gehäuse (100, 200), enthaltend:
    . eine gedruckte Schaltung (500)
    . eine Membran (300) aus Kunststoff, versehen mit leitenden Bereichen (328), um auf Befehl zugeordnete leitende Bereiche (528) zu verbinden, und
    . eine einen Diffusor bildende optische Prismenplatte (400), angepaßt um die Beleuchtung des Tastenfelds sicherzustellen,
    dadurch gekennzeichnet,
    daß die Prismenplatte (400) und die gedruckte Schaltung (500) in das Gehäuse (100, 200) eingerastet sind, die Silikon-Membran (300) zugleich den optimalen Sitz der Prismenplatte (400) und der gedruckten Schaltung (500) gewährleistet, und die genannten zugeordneten Bereiche (528) auf der gedruckten Schaltung (500) vorgesehen sind.
  2. Tastenfeld nach Anspruch 1, dadurch gekennzeichnet, daß es außerdem eine Abdichtungsmembran (700), Silikontyp, auf der Vorderseite der mit leitenden elektrischen Bereichen (328) versehenen Membran (300) umfaßt.
  3. Tastenfeld nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß das Gehäuse eine Verkleidung (110) umfaßt, versehen mit Zahnungen (160) zum Einrasten der Platte (400).
  4. Tastenfeld nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Gehäuse (100) eine Verkleidung (110) umfaßt, versehen mit Zahnungen (170) zum Einrasten der gedruckten Schaltung (500).
  5. Tastenfeld nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Gehäuse (100) außerdem Innenstifte (116) zur Zentrierung der Platte (400) umfaßt.
  6. Tastenfeld nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Membran (300) eine Struktur umfaßt, die die Abdichtung an den Zentrierstifte (116) sicherstellt.
  7. Tastenfeld nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Membran (300) vorstehende Stützen (340) besitzt, die den optimalen Sitz der gedruckten Schaltung (500) sicherstellen.
  8. Tastenfeld nach Anspruch 7, dadurch gekennzeichnet, daß wenigstens bestimmte der Stützen (343, 344) angepaßt sind an die Aufnahme von Kontrolleuchten.
  9. Tastenfeld nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Membran (300, 700) Umfangslippen besitzt, die so gestaltet sind, daß sie die auf der Vorderseite des Gehäuses ausgebildeten öffnungen (112) verschließen, um dort jeden Lichtaustritt zu verhindern.
  10. Tastenfeld nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Platte (400) versehen ist mit wenigstens einer zylindrischen öffnung, vorgesehen zur Aufnahme einer Beleuchtungslichtquelle (580).
  11. Tastenfeld nach einem der Anspruche 1 bis 10, dadurch gekennzeichnet, daß die Beleuchtungsquellen durch kleine Glühfadenlampen gebildet werden.
  12. Tastenfeld nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Platte (400) an ihrem Umfang mit einem dachförmigen Prisma (412, 414) versehen ist.
  13. Tastenfeld nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Platte (400) an ihrem Umfang versehen ist mit vorstehenden Lappen (460), angepaßt um in Eingriff zu kommen mit komplementären Einschnapp- bzw. Einrastzahnungen (160), vorgesehen an dem Gehäuse (100).
  14. Tastenfeld nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Platte (400) Durchgangslöcher (426) aufweist, vorgesehen zur Aufnahme der Finger (326), die mit jeder in der Membran (300) ausgebildeten Taste (320) fest verbunden sind.
  15. Tastenfeld nach Anspruch 14, dadurch gekennzeichnet, daß die Höhe der auf jeder der Tasten (320) der Membran (300) vorgesehenen Finger (326) größer ist als die Dicke der Platte (400), so daß das elektrisch leitende Ende (328) jedes Fingers (326) aus der Rückseite der Platte (400) herausragt.
  16. Tastenfeld nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Platte (400) Durchgangslöcher (440) zur Aufnahme von zusätzlichen Stützen (340) aufweist, die aus der Rückseite der Membran (300) herausragen.
  17. Tastenfeld nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die Stützen (340) angepaßt sind, um aus der Rückseite der Platte (400) herauszuragen und die gedruckte Schaltung (500) zu stützen.
  18. Tastenfeld nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Platte (400) an der Peripherie jeder zur Aufnahme eines Fingers (326) der Tasten (320) vorgesehenen Öffnung (426) eine zum Querschnitt der Tasten komplementäre ringförmige Vertiefung (422) umfaßt.
  19. Tastenfeld nach Anspruch 18, dadurch gekennzeichnet, daß jede Vertiefung (422) von einem Absatz (429) umgeben ist, komplementär zu einer Verstärkung (329), vorgesehen auf der Rückseite der Membran (300).
  20. Tastenfeld nach Anspruch 19, dadurch gekennzeichnet, daß die Membran (300) eingeklemmt ist zwischen der Innenseite des Gehäuses (100) und der Platte (400), in Höhe der Verstärkungen (329).
  21. Tastenfeld nach einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, daß die mit elektrisch leitenden Bereichen (328) versehene Membran (300) auf ihrer Vorderseite mit einem pigmentierten Überzug versehen ist.
  22. Tastenfeld nach einem der Ansprüche 1 bis 21, dadurch gekennzeichnet, daß die mit elektrisch leitenden Bereichen versehene Membran (300) außerdem automatisch das Verschluß- bzw. Zusammenbau-Spiel zwischen einem vorderen Deckel und einem hinteren Boden ausgleicht, die das Gehäuse bilden.
  23. Tastenfeld nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß die Einrastzahnungen (160, 170) mit Anzeigeeinrichtungen (164) versehen sind, die ermöglichen, das Einrasten zu kontrollieren.
  24. Tastenfeld nach Anspruch 23, dadurch gekennzeichnet, daß die Zahnungen (160, 170) seitlichen, in dem Gehäuse ausgebildeten Fenstern (151) gegenüberstehen und an ihrem freien Ende mit einem Anzeige-Absatz (164) versehen sind, der in das Fenster (151 zugeordnet) hineinragt, wobei die Länge dieses Absatzes (164) so angepaßt ist, daß seine Endfläche (166) in der Einraststellung mit der Außenfläche (153) des Gehäuses (100) fluchtet und, umgekehrt, der Absatz (164) aus der Außenfläche (153) des Gehäuses (100) herausragt, wenn die Einrastung nicht richtig erfolgt ist.
  25. Tastenfeld nach einem der Ansprüche 1 bis 24, dadurch gekennzeichnet, daß eine bedruckte Vorderseite (600) und/oder das Gehäuse (100) und/oder die Membran (300) hergestellt wird (werden) mittels eines gemeinsamen Gießens oder eines Auf- bzw. Übereinandergießens von zwei oder drei Materialien.
EP19940402123 1993-11-12 1994-09-23 Steuertastenfeld für elektrische oder elektronische Systeme, insbesondere Anti-Diebstahlsysteme für Kraftfahrzeuge Expired - Lifetime EP0653768B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9313507A FR2712408B1 (fr) 1993-11-12 1993-11-12 Clavier de commande d'un système électrique ou électronique, notamment pour système antivol de véhicule automobile .
FR9313507 1993-11-12

Publications (2)

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

Family

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Application Number Title Priority Date Filing Date
EP19940402123 Expired - Lifetime EP0653768B1 (de) 1993-11-12 1994-09-23 Steuertastenfeld für elektrische oder elektronische Systeme, insbesondere Anti-Diebstahlsysteme für Kraftfahrzeuge

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29707574U1 (de) * 1997-04-26 1997-07-10 Mannesmann VDO AG, 60388 Frankfurt Alphanumerische Tastatur für Kraftfahrzeuge
DE19740478A1 (de) * 1997-09-15 1999-03-18 Bosch Gmbh Robert Spritzgießling aus einem thermoplastischen Elastomer und Verfahren zu seiner Herstellung
KR19990018549U (ko) * 1997-11-12 1999-06-05 전주범 카 오디오용 컨트롤 패널의 쿠션 패드
US5952731A (en) * 1998-02-02 1999-09-14 Lear Automotive Dearborn, Inc. Membrane keyless entry switch for vehicles
AU2070101A (en) * 1999-12-08 2001-06-18 Winfield Locks, Inc. D.B.A. Computerized Security Systems Electronic lock
US6634065B2 (en) * 2000-12-19 2003-10-21 Decoma Exterior Trim, Inc. Retainer clip for attaching components to a belt molding
US6863301B2 (en) * 2001-02-23 2005-03-08 Key Safety Systems, Inc. Driver side air bag module with annular air bag and centrally disposed control module
GB0404922D0 (en) * 2004-03-04 2004-04-07 Dione Plc Secure card reader
DE102010020903B4 (de) * 2010-05-18 2013-03-07 Behr-Hella Thermocontrol Gmbh Bedieneinheit für ein Fahrzeug

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Publication number Priority date Publication date Assignee Title
GB2086804B (en) * 1980-11-04 1984-08-22 Standard Telephones Cables Ltd Keyblock assembly
US4638131A (en) * 1986-01-15 1987-01-20 General Motors Corporation Steering wheel pad keyboard switch assembly
US4772769A (en) * 1987-02-06 1988-09-20 Burr-Brown Corporation Apparatus for selective backlighting of keys of a keyboard
JPH0738288B2 (ja) * 1988-06-13 1995-04-26 三菱電機株式会社 操作キースイッチ装置
GB2266186B (en) * 1992-04-14 1995-09-20 Motorola Gmbh A keyboard

Also Published As

Publication number Publication date
EP0653768A1 (de) 1995-05-17
DE69406897T2 (de) 1998-05-28
FR2712408A1 (fr) 1995-05-19
FR2712408B1 (fr) 1996-02-16
DE69406897D1 (de) 1998-01-02

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