EP0795882A3 - Push-button switch - Google Patents

Push-button switch Download PDF

Info

Publication number
EP0795882A3
EP0795882A3 EP97100758A EP97100758A EP0795882A3 EP 0795882 A3 EP0795882 A3 EP 0795882A3 EP 97100758 A EP97100758 A EP 97100758A EP 97100758 A EP97100758 A EP 97100758A EP 0795882 A3 EP0795882 A3 EP 0795882A3
Authority
EP
European Patent Office
Prior art keywords
push
button switch
dome
contamination
dust
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
EP97100758A
Other languages
German (de)
French (fr)
Other versions
EP0795882A2 (en
EP0795882B1 (en
Inventor
Gerhard Hochgesang
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.)
Preh GmbH
Original Assignee
Preh GmbH
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 Preh GmbH filed Critical Preh GmbH
Publication of EP0795882A2 publication Critical patent/EP0795882A2/en
Publication of EP0795882A3 publication Critical patent/EP0795882A3/en
Application granted granted Critical
Publication of EP0795882B1 publication Critical patent/EP0795882B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • H01H13/82—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 characterised by contact space venting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2213/00—Venting
    • H01H2213/002—Venting with external pressure
    • H01H2213/004—Scavenger; Filter

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

Die Erfindung betrifft einen Tastschalter mit einer domförmigen Tastenkappe, wobei die unter dieser bestehende Schaltkammer atmosphärisch belüftet ist. Hierdurch tritt eine Verschmutzung durch Staub und Feuchtigkeit ein. Hiergegen sieht die Erfindung vor, daß der Belüftungskanal (7) eine luftdurchlässige Filterschicht (8) aufweist.

Figure 00000001
The invention relates to a key switch with a dome-shaped key cap, the switching chamber existing below this being atmospherically ventilated. This results in contamination from dust and moisture. In contrast, the invention provides that the ventilation channel (7) has an air-permeable filter layer (8).
Figure 00000001
EP97100758A 1996-03-07 1997-01-18 Push-button switch Expired - Lifetime EP0795882B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608773A DE19608773C2 (en) 1996-03-07 1996-03-07 Safety mat
DE19608773 1996-03-07

Publications (3)

Publication Number Publication Date
EP0795882A2 EP0795882A2 (en) 1997-09-17
EP0795882A3 true EP0795882A3 (en) 1999-01-20
EP0795882B1 EP0795882B1 (en) 2004-03-17

Family

ID=7787463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100758A Expired - Lifetime EP0795882B1 (en) 1996-03-07 1997-01-18 Push-button switch

Country Status (4)

Country Link
US (1) US5874700A (en)
EP (1) EP0795882B1 (en)
DE (2) DE19608773C2 (en)
ES (1) ES2214561T3 (en)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259434B1 (en) * 1999-01-06 2001-07-10 Chicony Electronics Co., Ltd. Tactually-activated structure
JP3836619B2 (en) * 1999-02-22 2006-10-25 アルプス電気株式会社 Keyboard input device
GB9922775D0 (en) * 1999-09-28 1999-11-24 Psion Computers Plc Keyboard for an electronic device
US7091952B2 (en) * 2001-05-03 2006-08-15 3M Innovative Properties Company Liquid proof switch array
US6690360B2 (en) 2001-05-03 2004-02-10 3M Innovative Properties Company Liquid proof switch array
JP2003226283A (en) * 2002-02-04 2003-08-12 Sanyo Electric Co Ltd Electronic controller of outdoor equipment
US6740832B2 (en) 2002-03-27 2004-05-25 3M Innovative Properties Company Apparatus exhibiting tactile feel
US6827459B2 (en) * 2002-03-27 2004-12-07 3M Innovative Properties Company Lighted fastening structure
US6610943B1 (en) * 2002-07-02 2003-08-26 Anthony Lewis Durfee Membrane switch venting arrangement for washing appliance
US6765158B1 (en) * 2003-05-08 2004-07-20 Lear Corporation Low profile switch with flat wire harness
JP4108548B2 (en) * 2003-06-19 2008-06-25 ミネベア株式会社 Keyboard switch
US8178808B2 (en) * 2009-02-24 2012-05-15 Research In Motion Limited Breathable sealed dome switch assembly
US8926201B2 (en) * 2010-11-10 2015-01-06 Blackberry Limited Keyboard with flexible printed circuit defining a plurality of venting holes
CN202003877U (en) * 2010-12-07 2011-10-05 富士康(昆山)电脑接插件有限公司 Switching device
CN103376900B (en) * 2012-04-24 2016-08-03 神讯电脑(昆山)有限公司 Input equipment
US9502193B2 (en) 2012-10-30 2016-11-22 Apple Inc. Low-travel key mechanisms using butterfly hinges
US9449772B2 (en) 2012-10-30 2016-09-20 Apple Inc. Low-travel key mechanisms using butterfly hinges
US9710069B2 (en) 2012-10-30 2017-07-18 Apple Inc. Flexible printed circuit having flex tails upon which keyboard keycaps are coupled
DE202012104778U1 (en) 2012-12-07 2014-03-12 Prehkeytec Gmbh Rubber mat keyboard, in particular silicone mat keyboard
CN105144017B (en) 2013-02-06 2018-11-23 苹果公司 Input-output apparatus with the appearance and function that are dynamically adapted
CA2901777A1 (en) * 2013-03-14 2014-10-02 Cardiovascular Systems, Inc. A membrane switch with a gas permeable, liquid impermeable layer
JP6103543B2 (en) 2013-05-27 2017-03-29 アップル インコーポレイテッド Short stroke switch assembly
US9908310B2 (en) 2013-07-10 2018-03-06 Apple Inc. Electronic device with a reduced friction surface
WO2015047606A1 (en) 2013-09-30 2015-04-02 Apple Inc. Keycaps having reduced thickness
WO2015047661A1 (en) 2013-09-30 2015-04-02 Apple Inc. Keycaps with reduced thickness
US9793066B1 (en) 2014-01-31 2017-10-17 Apple Inc. Keyboard hinge mechanism
US9779889B2 (en) 2014-03-24 2017-10-03 Apple Inc. Scissor mechanism features for a keyboard
US9704665B2 (en) 2014-05-19 2017-07-11 Apple Inc. Backlit keyboard including reflective component
US9715978B2 (en) 2014-05-27 2017-07-25 Apple Inc. Low travel switch assembly
WO2016025890A1 (en) 2014-08-15 2016-02-18 Apple Inc. Fabric keyboard
US10082880B1 (en) 2014-08-28 2018-09-25 Apple Inc. System level features of a keyboard
US10134539B2 (en) 2014-09-30 2018-11-20 Apple Inc. Venting system and shield for keyboard
WO2016183498A1 (en) 2015-05-13 2016-11-17 Apple Inc. Low-travel key mechanism for an input device
WO2016183510A1 (en) 2015-05-13 2016-11-17 Knopf Eric A Keyboard for electronic device
US9997304B2 (en) 2015-05-13 2018-06-12 Apple Inc. Uniform illumination of keys
CN205959841U (en) 2015-05-13 2017-02-15 苹果公司 Electronic equipment and keyboard groud spare
US9934915B2 (en) 2015-06-10 2018-04-03 Apple Inc. Reduced layer keyboard stack-up
US9971084B2 (en) 2015-09-28 2018-05-15 Apple Inc. Illumination structure for uniform illumination of keys
US10353485B1 (en) 2016-07-27 2019-07-16 Apple Inc. Multifunction input device with an embedded capacitive sensing layer
US10115544B2 (en) 2016-08-08 2018-10-30 Apple Inc. Singulated keyboard assemblies and methods for assembling a keyboard
US10755877B1 (en) 2016-08-29 2020-08-25 Apple Inc. Keyboard for an electronic device
US11500538B2 (en) 2016-09-13 2022-11-15 Apple Inc. Keyless keyboard with force sensing and haptic feedback
US10775850B2 (en) 2017-07-26 2020-09-15 Apple Inc. Computer with keyboard
US11164706B2 (en) 2017-09-26 2021-11-02 Merit Automotive Electronics Systems S.L.U. Elastomeric keypad
JP6936760B2 (en) 2018-04-05 2021-09-22 株式会社東海理化電機製作所 Switch device
JP6770548B2 (en) * 2018-04-05 2020-10-14 株式会社東海理化電機製作所 Switch device
CN113257603B (en) * 2021-06-17 2021-10-01 昆山兴协和科技股份有限公司 Membrane switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453061A (en) * 1981-06-09 1984-06-05 Ryutaro Tamura Capacitance type switch having dust-free interior
GB2133627A (en) * 1982-11-30 1984-07-25 Nippon Mektron Kk Membrane keyboard electrical switch
DE3809770C2 (en) * 1988-03-23 1991-01-10 Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De
DE4212562A1 (en) * 1992-04-15 1993-10-21 Buch Elektronik Gmbh Foil keyboard with snap-action plates under pushbuttons - has holes in front plate through which pushbuttons protrude in rest position under pressure from snap-action plates

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683600A (en) * 1970-06-03 1972-08-15 American Crucible Products Co Filter apparatus to protect a switch chamber against moisture
US3898421A (en) * 1972-08-18 1975-08-05 Matsushita Electric Ind Co Ltd Push button switch with elastic conductive sheet
US3888117A (en) * 1973-07-16 1975-06-10 Minnesota Mining & Mfg Pressure sensor and instrument utilizing same
CH645205A5 (en) * 1978-12-01 1984-09-14 Maag Gummi SHIFT MAT.
JPS58123529U (en) * 1982-02-16 1983-08-23 アルプス電気株式会社 keyboard switch
DE9012407U1 (en) * 1990-08-30 1992-01-09 Platz, Karl Otto, 5226 Reichshof, De
DE4312664C1 (en) * 1993-04-20 1994-07-28 Loh Kg Rittal Werk Filter-ventilator with intermediate casing for fitting into switchgear cubicle wall

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4453061A (en) * 1981-06-09 1984-06-05 Ryutaro Tamura Capacitance type switch having dust-free interior
GB2133627A (en) * 1982-11-30 1984-07-25 Nippon Mektron Kk Membrane keyboard electrical switch
DE3809770C2 (en) * 1988-03-23 1991-01-10 Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De
DE4212562A1 (en) * 1992-04-15 1993-10-21 Buch Elektronik Gmbh Foil keyboard with snap-action plates under pushbuttons - has holes in front plate through which pushbuttons protrude in rest position under pressure from snap-action plates

Also Published As

Publication number Publication date
DE59711404D1 (en) 2004-04-22
ES2214561T3 (en) 2004-09-16
EP0795882A2 (en) 1997-09-17
DE19608773C2 (en) 1998-11-26
US5874700A (en) 1999-02-23
DE19608773A1 (en) 1997-09-11
EP0795882B1 (en) 2004-03-17

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