EP0841674B1 - Elément formant bouton-poussoir électrique - Google Patents

Elément formant bouton-poussoir électrique Download PDF

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Publication number
EP0841674B1
EP0841674B1 EP97402606A EP97402606A EP0841674B1 EP 0841674 B1 EP0841674 B1 EP 0841674B1 EP 97402606 A EP97402606 A EP 97402606A EP 97402606 A EP97402606 A EP 97402606A EP 0841674 B1 EP0841674 B1 EP 0841674B1
Authority
EP
European Patent Office
Prior art keywords
key
ductile
contact
cupel
support
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
EP97402606A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0841674A1 (fr
Inventor
Daniel Demari
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.)
Apem
Original Assignee
Apem
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 Apem filed Critical Apem
Publication of EP0841674A1 publication Critical patent/EP0841674A1/fr
Application granted granted Critical
Publication of EP0841674B1 publication Critical patent/EP0841674B1/fr
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
    • H01H13/7006—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 comprising a separate movable contact element for each switch site, all other elements being integrated in layers

Definitions

  • the present invention relates to a push button element electric that can be used, for example, with electric keyboards to establish contact electric and produce a control signal or special control.
  • an element forming an electric push button of the type comprising a button which can be inserted into a fixed body to deform a metal cup of contact from a specific stroke of the button and establish electrical contact.
  • this known push button element is designed in such a way that the driving force of the key depends only on the effort required to deform the electrical contact cup.
  • the invention provides an element forming electric push button according to claim 1.
  • the underside of the rim button device is pressing on the workpiece deformable by means of a circular bead attached to this face.
  • the key comprises a pad central bearing on the top of the contact cup and of a height substantially equal to the thickness of the deformable part.
  • This deformable part is preferably in the form of washer whose central hole contains the cup of contact.
  • the deformable part includes a base part on the upper side of which is in support the circular bead of the touch and touch the top of the cup contact ; a first annular projecting part secured to the underside of the base part and resting on a part forming the bottom of the fixed body of so as to form with the base part a housing of maintaining the contact cup; and a second annular projecting part integral with the face upper part of the base part and resting on the part bottom of the button.
  • the base part of the deformable part includes a central recess in the form of a concave spherical cap in which is housed the vertex of conjugate form of the contact cup.
  • the first and second annular parts protruding have the same height and the second part annular is of a diameter smaller than that of the first annular part located approximately in plumb with the circular bead.
  • the deformable part is made of material foam or elastomer.
  • the invention also provides a device forming keyboard with at least one push button element such as as defined above and which is characterized in that the body of the push button element is fixed on a flexible keyboard membrane through a rigid fixing plate located on the other side of the flexible membrane and the contact cup includes several legs connected to contact points membrane electrics connected to at least one circuit electric control or special command.
  • the keyboard device is used to control the audible warning circuit of a motor vehicle and is mounted in the steering wheel of direction of this vehicle.
  • the flexible membrane of the keyboard device is arranged behind a air bag integrated into the vehicle's steering wheel.
  • the flexible membrane comprises four push button elements attached respectively substantially at the four corners of it.
  • Figure 1 is a sectional view of a member forming electric push button according to a first mode of realization of the invention.
  • Figure 2 is a schematic view of a device forming a keyboard with several elements forming a push button according to a second embodiment of the invention and mounted behind the airbag integrated into the steering wheel of a motor vehicle.
  • Figure 3 is an enlarged view of the part circled in III of a push button element of the second mode for carrying out the invention.
  • Figure 4 is a top view of a flexible membrane to at least one element forming an electrical push button the invention can be used in the device forming keyboard of figure 2.
  • the electric push button element such as shown in Figure 1 is of the type comprising a body 1 generally cylindrical in shape fixed to a support 2, such a printed circuit board, a flexible membrane, or similar, may be part of a device forming keyboard; a button 3 retained in the fixed body 1 and able to sink axially therein to deform a metal contact cup 4 from a determined stroke of key 3 and establish contact electric.
  • Contact cup 4 housed in the body 1, includes, as is known per se, a certain number of legs (not shown), for example number of four, electrically connected respectively to metallic points of electrical contact of support 2 connected to one or more electrical circuits individuals via conductive tracks of support 2 (not shown).
  • the deformation by button 3 of the cup 4 causes it to come in contact with a central electrical contact point for circulate current between the different points of electrical contact associated respectively with the legs of the cup.
  • the support 2 is constituted by a flexible plastic membrane in which are engraved electrical contact points and tracks above mentioned conductive bodies 1 is attached to membrane 2 via a rigid plate or fixing base 5 located on the side of the membrane 2 opposite to where the body 1 rests so that this membrane be sandwiched between body 1 and the fixing plate 5, which can be circular.
  • the fixing the body 1 to the plate 5 can be done by small cylindrical metallic axes (not shown) press fit into plate 5 and body 1 in crossing the membrane 2 transversely thereto as symbolized by the dashed lines in Figure 1.
  • the push button element also includes a part 6 made of a material elastically deformable housed in the body 1 between the button 3 and the support 2 forming the bottom of the body 1 of way to adjust, depending on the material used for the deformable part 6, the pressing force of the key 3 to deform the contact cup 4.
  • the deformable part 6 is produced in a plastic foam material which ensures at the same time the tightness of the push button element.
  • the deformable part 6 is preferably in the form of washer, in the central hole 6a of which is housed and maintained the contact cup 4.
  • Key 3 is pressed on a peripheral part upper part deformable 6 by one side lower edge 3a of button 3 formed at the bottom of this key and, on the other part, by the reaction force of the deformable part 6, on a peripheral edge 1a of the body 1, which delimits a opening 1b for passage of the cylindrical external part 3b of the key, by the upper face of the edge device 3a of this key.
  • the underside of the peripheral rim 3a of the key 3 is supported on the deformable part 6 by means of a circular bead 7 secured of this face.
  • Key 3 also includes a central pad cylindrical 8 resting on the top of the cup contact 4 and a height substantially equal to the thickness of the deformable part 6.
  • the operator To deform the contact cup 4 and thus establish an electrical contact by the latter on the support 2, the operator must exert an effort on key 3 predetermined penetration depending on the material used to make the deformable part 6. So, by changing type of material used to make the part deformable 6, the force necessary to press the key 3 and deform the metal cup 4 is also changed.
  • the material of part 6 is defined in the factory depending on the desired pressing force of the button.
  • FIG 2 shows, without limitation the particular application of a device forming soft membrane type keyboard like this shown in Figure 1 to control a circuit electric horn of a motor vehicle, the keyboard device then being mounted in the steering wheel thereof, preferably back of the air-bag system housed in a housing 9 integrated into the steering wheel.
  • the flexible membrane of this keyboard device can have a number of push button elements of the type shown in Figure 1, for example four push button elements attached respectively at four corners of the membrane as we will see with reference to Figure 4 so as to allow the driver of the motor vehicle to use the audible warning device by actuating, by pressing one of these four elements on the steering wheel.
  • Figure 2 in conjunction with Figure 3, shows another possible embodiment of each push button element of the invention capable of be mounted on the membrane 2 in place of the element Figure 1.
  • the part deformable 6 includes a base part 6b on the face upper of which is supported the bead circular 7 of key 3, part 6b being contact on the top of the contact cup 4; a first annular projecting part 6c secured to the underside of the base part 6b of the part 6 and resting on the membrane 2 so as to form with the base part 6b a cup holding housing contact 4; ; and a second annular projecting part 6d secured to the upper face of the base part 6b and pressing the lower part of the button 3 comprising the annular rim 3a.
  • the first and second annular projecting parts 6c, 6d have the same height and the second annular part 6d is smaller in diameter than the first part annular 6c which is located approximately plumb circular bead 7.
  • the base part 6b of the deformable part 6 comprises a 6th central recess in the shape of a spherical cap concave in which the vertex of conjugate form is housed of the contact cup 4 so as to maintain positively the cup under the deformable part 6.
  • Each circular fixing plate 5 of an element forming a push button attached to the membrane 2 is embedded in a recess of conjugate shape 10 produced in the upper surface of a plate 11 for fixing the steering wheel assembly with the diaphragm 2 in support on this upper face.
  • FIG. 4 represents a flexible membrane 2 of a keyboard device mounted in the steering wheel steering of a motor vehicle to operate the audible warning device thereof.
  • This figure shows the membrane 2 provided with an element forming a complete push button attached to the right corner and whose body 1, the key 3 as well as, by transparency, the fixing plate or base 5.
  • the other push button elements located respectively in the other three corners of the membrane 2 were not fully represented, since only the metallic contact cup 4 of each of them is visible and includes all four legs 4a electrically connected to the corresponding electrical contact points 12 which can be seen in part in FIG. 4 and which are electrically connected to the conductive tracks 13 etched in the membrane 2.
  • the conductive tracks 13 are connected to a sheet 14 with conductive connecting tracks 15 connected to the horn's electrical circuit motor vehicle so as to activate it when one of the keys 3 of a push button element is pressed.
  • the above-described push button element the invention has a pressing force on its key correspondent independent of electrical contact and / or the control mechanism of this contact, unlike known push button elements.
  • the deformable part of this element effectively removes vibrations of the corresponding cup likely to induce noise.
  • the button element pusher of the invention can be applied to any type of keyboard to form so-called tactile keys.

Landscapes

  • Push-Button Switches (AREA)
  • Air Bags (AREA)
  • Steering Controls (AREA)
EP97402606A 1996-11-06 1997-10-31 Elément formant bouton-poussoir électrique Expired - Lifetime EP0841674B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9613536A FR2755534B1 (fr) 1996-11-06 1996-11-06 Element formant bouton-poussoir electrique
FR9613536 1996-11-06

Publications (2)

Publication Number Publication Date
EP0841674A1 EP0841674A1 (fr) 1998-05-13
EP0841674B1 true EP0841674B1 (fr) 2002-06-19

Family

ID=9497378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402606A Expired - Lifetime EP0841674B1 (fr) 1996-11-06 1997-10-31 Elément formant bouton-poussoir électrique

Country Status (6)

Country Link
US (1) US6008460A (ko)
EP (1) EP0841674B1 (ko)
JP (1) JPH10188722A (ko)
KR (1) KR19980042158A (ko)
FR (1) FR2755534B1 (ko)
NO (1) NO975098L (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2854296A1 (de) 2013-09-27 2015-04-01 Contelec AG Kontaktloser Taster

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000215754A (ja) 1999-01-26 2000-08-04 Nec Shizuoka Ltd 電子機器の操作ボタン構造
JP3773743B2 (ja) * 2000-02-29 2006-05-10 三洋電機株式会社 電気かみそり
FR2913810B1 (fr) * 2007-03-13 2009-05-22 Crouzet Automatismes Soc Par A Dispositif de detection et siege comportant un tel dispositif
TWM317614U (en) * 2007-03-27 2007-08-21 Darfon Electronics Corp Keyboard
US8302988B2 (en) 2008-03-10 2012-11-06 Hendrickson Usa, L.L.C. Suspension assembly with tie-plate
JP4747377B2 (ja) * 2008-06-06 2011-08-17 Ｓｍｋ株式会社 押釦ユニット
JP5249827B2 (ja) * 2009-03-17 2013-07-31 アルプス電気株式会社 スイッチ用可動接点およびスイッチ装置
US8491003B2 (en) 2010-02-23 2013-07-23 Judco Manufacturing, Inc. Airbag frame apparatus
US8939466B2 (en) 2010-02-23 2015-01-27 Judco Partnership, Llc Airbag frame apparatus
USD672287S1 (en) 2010-09-05 2012-12-11 Hendrickson Usa, L.L.C. Frame-hanger-to-frame-hanger tie-plate
USD672286S1 (en) 2010-09-05 2012-12-11 Hendrickson Usa, L.L.C. Suspension assembly
MX2014000235A (es) 2011-07-08 2014-03-21 Hendrickson Usa Llc Suspension de vehiculo y metodo de ensamble mejorado.
US8262112B1 (en) 2011-07-08 2012-09-11 Hendrickson Usa, L.L.C. Vehicle suspension and improved method of assembly
US9004512B2 (en) 2011-07-08 2015-04-14 Hendrickson Usa, L.L.C. Shear spring useful for vehicle suspension
USD700113S1 (en) 2012-07-06 2014-02-25 Hendrickson Usa, L.L.C. Suspension assembly
USD700112S1 (en) 2012-07-06 2014-02-25 Hendrickson Usa, L.L.C. Progressive rate spring for a suspension
US9085212B2 (en) * 2013-03-15 2015-07-21 Hendrickson Usa, L.L.C. Vehicle suspension
US9150071B2 (en) 2013-07-25 2015-10-06 Hendrickson Usa, L.L.C. Frame hanger for vehicle suspension
FR3071453B1 (fr) 2017-09-27 2021-01-01 Autoliv Dev Systeme de commande d'avertisseur sonore de vehicule

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US3921750A (en) * 1973-07-16 1975-11-25 Max Shames Vehicle brake warning light system accelerator pedal switch
US4029916A (en) * 1975-04-18 1977-06-14 Northern Electric Company Limited Multi-contact push-button switch and plural embodiment for keyboard switch assembly
US4031348A (en) * 1975-11-20 1977-06-21 Microma Incorporated Push-button assembly switch for watches
US4170104A (en) * 1976-12-01 1979-10-09 Citizen Watch Company Limited Switch mechanism for wristwatch
US4304973A (en) * 1978-12-11 1981-12-08 Otis Elevator Company Rugged low force switch apparatus
US4362911A (en) * 1980-09-17 1982-12-07 Ncr Corporation Membrane keyboard switch assembly having selectable tactile properties
FR2504721A1 (fr) * 1981-04-22 1982-10-29 Telecomm El Aeronaut Maritime Dispositif formant panneau pour clavier et/ou touches individuelles ou boutons-poussoirs associes
US4386254A (en) * 1981-06-15 1983-05-31 Timex Corporation Rocker switch
US4417294A (en) * 1981-08-28 1983-11-22 Illinois Tool Works Inc. Capacitive keyswitch
JPH0436522Y2 (ko) * 1987-05-20 1992-08-28
US5199557A (en) * 1988-01-28 1993-04-06 Mec A/S Method of producing an electric or electronic component, a method of producing a key and a key
US4934735A (en) * 1988-12-12 1990-06-19 General Motors Corporation Switch assembly for modular occupant restraint system
CH677552A5 (ko) * 1989-04-10 1991-05-31 Sulzer Ag
FR2659459B1 (fr) * 1990-03-08 1993-11-26 Sextant Avionique Touche a effet tactile et clavier utilisant cette touche.
JPH0447616A (ja) * 1990-06-11 1992-02-17 Fujitsu Ltd スイッチ素子
US5765860A (en) * 1996-02-16 1998-06-16 Autoliv Asp, Inc. Apparatus for mounting an inflatable vehicle occupant restraint module to a vehicle steering wheel
US5767466A (en) * 1996-07-24 1998-06-16 Ut Automotive Dearborn, Inc. Flexible switch for a vehicle steering wheel assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2854296A1 (de) 2013-09-27 2015-04-01 Contelec AG Kontaktloser Taster
US9318280B2 (en) 2013-09-27 2016-04-19 Contelec Ag Contactless switch

Also Published As

Publication number Publication date
FR2755534B1 (fr) 1998-12-11
JPH10188722A (ja) 1998-07-21
EP0841674A1 (fr) 1998-05-13
NO975098L (no) 1998-05-07
NO975098D0 (no) 1997-11-05
FR2755534A1 (fr) 1998-05-07
KR19980042158A (ko) 1998-08-17
US6008460A (en) 1999-12-28

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