EP0163874A2 - Commutateur à touche - Google Patents

Commutateur à touche Download PDF

Info

Publication number
EP0163874A2
EP0163874A2 EP85104644A EP85104644A EP0163874A2 EP 0163874 A2 EP0163874 A2 EP 0163874A2 EP 85104644 A EP85104644 A EP 85104644A EP 85104644 A EP85104644 A EP 85104644A EP 0163874 A2 EP0163874 A2 EP 0163874A2
Authority
EP
European Patent Office
Prior art keywords
button
key
key switch
housing
guide
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
EP85104644A
Other languages
German (de)
English (en)
Other versions
EP0163874B1 (fr
EP0163874A3 (en
Inventor
Reinhard Deeg
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
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 Alcatel SEL AG, Standard Elektrik Lorenz AG filed Critical Alcatel SEL AG
Publication of EP0163874A2 publication Critical patent/EP0163874A2/fr
Publication of EP0163874A3 publication Critical patent/EP0163874A3/de
Application granted granted Critical
Publication of EP0163874B1 publication Critical patent/EP0163874B1/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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/01—Off centre actuation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H01H2221/026—Guiding or lubricating nylon

Definitions

  • the invention relates to a key switch according to the preamble of claim 1.
  • the average overall height of the keyboard should not exceed 30 mm. This requirement cannot be met with conventional push-button switches.
  • the object of the invention is to provide a key switch of the type mentioned, which has a low overall height and is easy to move.
  • the advantages achieved by the invention consist, in particular, in that the length of the push guide can be reduced to a fraction of the previous length by the button button which is guided in addition to the button plunger, and that the button button is guided inwards, which means that the button is pushed off-center only slightly Increased actuation force causes.
  • FIG. 1 shows a schematic representation of a conventional embodiment of a key switch in section.
  • the key switch housing 10 is open at the bottom. It is closed by a base plate 11 which has contacts 11a.
  • a rubber-elastic switching knob 12 Arranged above the base plate 11 is a rubber-elastic switching knob 12 which has a contact pill 12a in the middle.
  • a button stem 15 rests on the knob 12 and is vertically displaceable in a guide 13 in the housing 10.
  • the guide 13 of the stem 15 is extended by a raised part 10a on the top of the housing 10.
  • a button 16 is attached to the stamp 15 and has an actuating surface 16a.
  • an actuating force F B acts on the keys on the outer edge of the surface 16a button 16, the button member consisting of the push L 15 and the button 16 is subjected to a tilting moment, whereby the push L 15 rests on one side at the upper edge and on the lower side at the lower edge of the guide 13.
  • support forces F S1 and F S2 appear at the contact points, the contact angles of which are essentially determined by an assumed material pairing. For the sake of better comparability, the same prerequisites are assumed for all of the examples described below.
  • the effective direction intersection of the supporting force F S1 with the actuating force F B and the effective direction intersection of the supporting force F S2 with the knob force FN is connected by the so-called Cullmann straight line C.
  • the angular position of this straight line is a direct measure of the increase in the actuating force F B , the force F B being greater the flatter the straight line C is.
  • the increase in the actuation force F B compared to the nub force FN is 0.15N, which means almost 40% increase in force with one-sided actuation, from the force corner in FIG. 1.
  • FIG. 2 shows a first embodiment of a key switch in section, in which in addition to the key plunger 25, the key button 26 is performed.
  • the schematic representation shows a key switch with a round key switch housing 20, for example, which is open at the bottom. It is closed by a base plate 21 which has contacts 21a.
  • a rubber-elastic switching knob 22 is supported on the base plate and has a contact pill 22a in the middle.
  • a button push L 25 rests on the knob 22 and moves vertically in a guide 23 in the housing 20 Lich is.
  • the guide 23 is limited to the material thickness of the housing 20.
  • the stem 25 is connected at the upper end to a button 26 which engages in a bell shape over the cylindrical housing 20. It has an operating surface 26a at the top.
  • the inner wall of the button 26 runs at a short distance parallel to the cylindrical housing 20 and extends so far that its lower edge does not touch the bottom plate 21 when the button switch is actuated.
  • the button has at least four cross-shaped sliding cams 28 which, apart from a small amount, are equal to the distance between the housing 20 and the button 26.
  • a sliding ring (not shown) can also be provided.
  • FIG. 3 and 4 show a second exemplary embodiment of a key switch in section, in which a key button 36 is also guided in addition to the key tappet 35.
  • the schematic representation shows a key switch with a square key switch housing 30 (FIG. 4) and a square key button 36 with actuating surface 36a.
  • Figure 4 shows the section III-III, in which the figure 3 is shown.
  • the key switch housing 30 is open at the bottom. It is closed by a base plate 31 which has contacts 31a.
  • a rubber-elastic switching knob 32 is supported on the base plate 31 and is firmly connected to the housing 30 via the base plate 31. Above the contacts 31a, the switching knob 32 has a contact pill 32a in the middle at a distance from the switching stroke S H.
  • the button pushes L 35, which is guided vertically in a raised part 30 a on the top of the push button switch housing 30, rests on the knob 32.
  • the guide 33 is limited to a narrow upper area of the part 30a.
  • the square button 36 On the plunger 35, the square button 36 is fastened, which has at least two rigid rods 37 with an angular cross-section at the corner and parallel to the L 35 joint (FIG. 4).
  • the bars 37 are flush with the outer contour of the button 36 in a corner.
  • In the top of the TastschaLtergeophuses 30 are bushings 34 in the cross-sectional shape of the rods 37, through which the STAE b e project into the TastschaLterhohLraum 37th
  • two guide webs 39 are arranged in the free corners of the pushbutton switch housing 30 parallel to the end faces of the rods 37 per rod 37, which, according to FIG. 3, are parallel to the rods 37 at a certain distance.
  • each rod 37 has a sliding cam 38 on the end faces, with which it can be pressed with a small amount of play about 39.
  • the guide webs 39 are offset somewhat inwards relative to the bushings 34, so that there is a stepped shoulder.
  • FIG. 5 shows a schematic representation of a conventional embodiment in section.
  • the key switch housing 50 has a width corresponding to the key button length and is open at the bottom.
  • a switching knob 52 is arranged in the interior of the housing 50 and is supported on a base plate 51 which closes the housing 50.
  • contacts 51a and a contact pill 52a face each other at a distance from the switching stroke S H.
  • a button tappet 55 rests on the knob 52 and has a long guide 53 which extends through the thickness of the upper side of the housing including a raised part 50a on the upper side.
  • a key button 56 of double length is firmly connected to the key stamp 55 and has an actuating surface 56a extending over the entire length.
  • an actuating force F B acts on the key button 56 at the outer edge of the surface 56a in the above-described key switch, a large tilting moment occurs, which has a correspondingly high supporting force F S1 and F S2 . If the counter force of the switch knob 52 is greatest with the partial stroke S x with FN, it can even lead to a breakage of the key stamp 55, since according to the corner of force due to the very flat Cullmann straight line C, the actuating force F B required for displacing the key element 55/56 grows by 1.5N compared to the nub force F N , which means a force increase of 400%.
  • the key switch FIG. 6, as a third exemplary embodiment, has significantly more favorable values.
  • the schematic representation of the key switch of Figure 6 corresponds exactly to the design of Figures 3 and 4, so that the structure of the key switch is not as detailed needs to be repeated.
  • the only difference is that the rods 67 are not arranged flush with the outer contour of the button 66, but are set somewhat inwards.
  • the rods 67 are arranged on the inside of the button 66 in the corner region of the actuating surface 66a.
  • the bushings for the rods 67 are arranged in the upper side of the pushbutton switch housing 60.
  • the guide webs 69 visible in the drawing are chamber walls which separate the actual switch area from the guide areas, so that dirt or moisture which penetrates through the passages 64 are kept away from the switch area. In the embodiment according to FIG. 3, this is also possible if the guide webs 39 are extended to form a closed quadrilateral.
  • the key stamp 65 is supported on the right in the guide 63.
  • the button 66 is supported on the associated guide webs 69 by one or more rods 67 with the sliding cams 38 on the end.
  • keyboards were basically made up of individual switching elements, in recent times it has become more common to provide a keyboard frame that is common to all key switches instead of individual key switch housings.
  • the underside of such keyboard frames are divided into many compartments by crosswise arranged webs, each of which accommodates the contact device of a switch.
  • FIG. 7 shows a perspective view of a section of a keyboard frame 70 of this type in plan view, which has a schematic representation of the externally visible guide devices for the key members 75/76 shown above.
  • These key members 75/76 correspond to the embodiment described for FIG. 3. They consist of a key tappet 75, which is a part with a key button 76.
  • the button buttons have rods 77 arranged at a corner and having an angular cross section, which are flush with the outer contour of the button button 76.
  • sliding cams 78 are arranged on the inside.
  • the keyboard frame 70 has parts 70a protruding from the top with guides 73 for the plunger 75.
  • the keyboard frame 70 has bushings 74 in the cross-sectional shape of the rods 77. Below the bushings 74 are the guides in conjunction with the compartment walls of the rods 77 arranged.

Landscapes

  • Push-Button Switches (AREA)
EP85104644A 1984-04-19 1985-04-17 Commutateur à touche Expired - Lifetime EP0163874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3414909 1984-04-19
DE19843414909 DE3414909A1 (de) 1984-04-19 1984-04-19 Tastschalter

Publications (3)

Publication Number Publication Date
EP0163874A2 true EP0163874A2 (fr) 1985-12-11
EP0163874A3 EP0163874A3 (en) 1986-11-05
EP0163874B1 EP0163874B1 (fr) 1990-06-27

Family

ID=6234068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104644A Expired - Lifetime EP0163874B1 (fr) 1984-04-19 1985-04-17 Commutateur à touche

Country Status (3)

Country Link
US (1) US4918271A (fr)
EP (1) EP0163874B1 (fr)
DE (2) DE3414909A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213647A (en) * 1988-01-08 1989-08-16 Marconi Electronic Devices Push-button key switches
GB2191040B (en) * 1986-05-28 1990-04-18 Plessey Co Plc Keypad assemblies
DE102013223843A1 (de) * 2013-11-21 2015-06-03 Zf Friedrichshafen Ag Tastenknopf, Tastenschalter, Tastenrahmen und Leiterplatte für eine Dateneingabevorrichtung, Dateneingabevorrichtung und Verfahren zur Reduzierung eines Schaltweges eines Tastenschalters einer Dateneingabevorrichtung

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130506A (en) * 1990-02-28 1992-07-14 Eaton Corporation Low current switching apparatus having detent structure providing tactile feedback
JP2557557Y2 (ja) * 1991-02-12 1997-12-10 ミネベア株式会社 キースイッチ
US5172990A (en) * 1991-05-23 1992-12-22 Cal-Comp Electronics, Inc. Structures of push - button key of keyboard
US5253142A (en) * 1991-09-19 1993-10-12 Cal-Comp Electronics, Inc. Body structure for a pocket computer having a fastener with multiple spaced apart elements
US5668358A (en) * 1994-07-05 1997-09-16 Ultimate Rechnology Corporation Reconfigurable keyboard
DE19757929C2 (de) * 1997-12-24 1999-10-14 Hella Kg Hueck & Co Bedieneinheit für eine Fahrzeugkomponente, insbesondere für das Steuergerät einer Klimaanlage
DE19853753A1 (de) * 1998-11-21 2000-05-25 Preh Elektro Feinmechanik Bedientastatur, insbesondere für eine Kraftfahrzeug-Klimaanlage
AU2001256311A1 (en) * 2000-05-24 2001-12-03 Telefonaktiebolaget Lm Ericsson (Publ) Keyboard comprising a dome foil
EP1158553A1 (fr) * 2000-05-24 2001-11-28 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Clavier pourvu d'une feuille à dômes
RU2239251C2 (ru) * 2003-01-04 2004-10-27 Российская Федерация в лице Министерства Российской Федерации по атомной энергии Кнопочный выключатель
US7252444B2 (en) * 2004-04-08 2007-08-07 Research In Motion Limited Switch configuration
TWI571691B (zh) * 2016-04-22 2017-02-21 致伸科技股份有限公司 組裝式鍵盤及組裝式按鍵
EP3287722B1 (fr) 2016-08-23 2020-07-15 Dometic Sweden AB Armoire pour véhicule de loisirs
AU201710975S (en) * 2016-08-24 2017-03-16 Dometic Sweden Ab Control panel and/or display for a refrigerator or freezer
DE102016216126A1 (de) 2016-08-26 2018-03-01 Dometic Sweden Ab Kühleinrichtung für ein Freizeitfahrzeug
DE102019207919A1 (de) 2019-05-29 2020-12-03 Dometic Sweden Ab Scharniermechanismus, Fachtüranordnung mit einem solchen Scharniermechanismus, Schrank oder Kühlschrank mit einem solchen Scharniermechanismus und/oder Fachtüranordnung, und Freizeitfahrzeug

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE214479C (fr) *
US2040919A (en) * 1932-04-07 1936-05-19 Engineering & Res Corp Circuit closer
US3663780A (en) * 1970-06-08 1972-05-16 Oak Electro Nectics Corp Switch in a button
US3721778A (en) * 1971-06-21 1973-03-20 Chomerics Inc Keyboard switch assembly with improved operator and contact structure
US3707609A (en) * 1971-10-27 1972-12-26 Texas Instruments Inc Diaphragm pushbutton switch array for keyboards
AU466541B2 (en) * 1972-08-10 1975-10-30 Oak Industries Inc Low profile keyboard switch
DE2352230B2 (de) * 1973-10-18 1975-11-06 Schoeller & Co, Elektrotechnische Fabrik, 6000 Frankfurt Drucktastenaggregat
FR2443129A1 (fr) * 1978-11-29 1980-06-27 Serras Paulet Edouard Dispositif de commutation electrique ou electronique formant bouton-poussoir ou clavier a touches enfoncables
GB2046996A (en) * 1979-04-11 1980-11-19 Electronic Components Ltd Electrical switch
NL7906931A (nl) * 1979-09-18 1981-03-20 Philips Nv Druktoetsschakelaar.
DE8214479U1 (de) * 1982-05-18 1982-09-30 Standard Elektrik Lorenz Ag, 7000 Stuttgart Grossflaechige drucktaste

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2191040B (en) * 1986-05-28 1990-04-18 Plessey Co Plc Keypad assemblies
GB2213647A (en) * 1988-01-08 1989-08-16 Marconi Electronic Devices Push-button key switches
DE102013223843A1 (de) * 2013-11-21 2015-06-03 Zf Friedrichshafen Ag Tastenknopf, Tastenschalter, Tastenrahmen und Leiterplatte für eine Dateneingabevorrichtung, Dateneingabevorrichtung und Verfahren zur Reduzierung eines Schaltweges eines Tastenschalters einer Dateneingabevorrichtung

Also Published As

Publication number Publication date
DE3578482D1 (de) 1990-08-02
EP0163874B1 (fr) 1990-06-27
US4918271A (en) 1990-04-17
EP0163874A3 (en) 1986-11-05
DE3414909A1 (de) 1985-10-24

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