EP0795882A2 - Poussoir - Google Patents

Poussoir Download PDF

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Publication number
EP0795882A2
EP0795882A2 EP97100758A EP97100758A EP0795882A2 EP 0795882 A2 EP0795882 A2 EP 0795882A2 EP 97100758 A EP97100758 A EP 97100758A EP 97100758 A EP97100758 A EP 97100758A EP 0795882 A2 EP0795882 A2 EP 0795882A2
Authority
EP
European Patent Office
Prior art keywords
contact
push button
carrier
switch according
button switch
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)
English (en)
Other versions
EP0795882A3 (fr
EP0795882B1 (fr
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/fr
Publication of EP0795882A3 publication Critical patent/EP0795882A3/fr
Application granted granted Critical
Publication of EP0795882B1 publication Critical patent/EP0795882B1/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
    • H01H13/702—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

Definitions

  • the invention relates to a key switch according to the preamble of claim 1.
  • Such key switches arranged one or more times next to each other as a keypad are used within control panels or for input keyboards.
  • a dome-shaped key cap is arranged above the actuating element of the key switch, which can be designed as a mat for key fields.
  • ventilation of the switching chambers inside the keycaps is absolutely necessary when the keycap is pressed in. This can be done by directly exiting the air into the atmosphere or by ventilating into other switching chambers under pressure equalization.
  • the object of the invention is to design a specified push button switch so that the ingress of dust and moisture is prevented.
  • each switching chamber is separately ventilated to the outside, there is no influence on the actuation forces. Contamination of the switching system is also prevented.
  • the only figure shows a stylized button switch in section.
  • the drawing schematically shows a key switch 1 with a dome-shaped key cap 2, which can be pressed onto a contact foil 3 by a key (not shown) and thereby short-circuits 4 contacts with a contact pill.
  • the key switch 1 can be part of a keypad consisting of many key switches, the key cap 2 then consisting of a so-called key mat 5.
  • An existing under the key cap 2 switching chamber 6 is connected to the atmosphere through a ventilation channel 7, so that the air in the switching chamber 6 can flow out during operation and flow back in again.
  • the ventilation channel 7 has an air-permeable filter layer 8, so that dust and moisture can no longer enter or be sucked into the switching chamber 6.
  • the ventilation channel 7 is formed by openings 9, 10 of the contact film 3 and a carrier 11, a filter fleece 12 forming the filter layer 8 being arranged between the contact film 3 and the carrier 11.
  • each switching chamber has its own ventilation channel.
  • a plurality of switching chambers 6 are connected to the ventilation channel 7 via a connecting channel (not shown) arranged in a key cap mat 5 having a plurality of key caps 2.
  • a connecting channel (not shown) arranged in a key cap mat 5 having a plurality of key caps 2.
  • several openings 9, 10 in the contact film 3 or the carrier 11 can be omitted.
  • the filter layer 8 or the filter fleece 12 located between the contact film 3 and the carrier 11 is advantageously dust and moisture repellent. It preferably has a thickness between 0.15 mm and 0.5 mm, preferably 0.2 mm.
  • the push button switch 1 in particular as part of a keypad 5, is easy to operate by venting the switching chamber 6.
  • the air exchanged is freed of dust and moisture by the filter layer 8, 12, so that no contamination of the contacts and the contact pill 4 can occur.
  • the proposed embodiment can advantageously be produced in large series.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
EP97100758A 1996-03-07 1997-01-18 Poussoir Expired - Lifetime EP0795882B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608773A DE19608773C2 (de) 1996-03-07 1996-03-07 Schaltmatte
DE19608773 1996-03-07

Publications (3)

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

Family

ID=7787463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100758A Expired - Lifetime EP0795882B1 (fr) 1996-03-07 1997-01-18 Poussoir

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113257603A (zh) * 2021-06-17 2021-08-13 昆山兴协和科技股份有限公司 薄膜开关

Families Citing this family (46)

* 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 (ja) * 1999-02-22 2006-10-25 アルプス電気株式会社 キーボード入力装置
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 (ja) * 2002-02-04 2003-08-12 Sanyo Electric Co Ltd 屋外機器の電子式コントローラー
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 (ja) * 2003-06-19 2008-06-25 ミネベア株式会社 キーボード用スイッチ
CA2694560C (fr) 2009-02-24 2014-02-04 Research In Motion Corporation Ensemble de commutation de dome scelle permeable a l'air
US8926201B2 (en) * 2010-11-10 2015-01-06 Blackberry Limited Keyboard with flexible printed circuit defining a plurality of venting holes
CN202003877U (zh) * 2010-12-07 2011-10-05 富士康(昆山)电脑接插件有限公司 开关装置
CN103376900B (zh) * 2012-04-24 2016-08-03 神讯电脑(昆山)有限公司 输入装置
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
US9502193B2 (en) 2012-10-30 2016-11-22 Apple Inc. Low-travel key mechanisms using butterfly hinges
DE202012104778U1 (de) 2012-12-07 2014-03-12 Prehkeytec Gmbh Gummimatten-Tastatur, insbesondere Silikonmatten-Tastatur
AU2014214872B2 (en) 2013-02-06 2017-05-25 Apple Inc. Input/output device with a dynamically adjustable appearance and function
CA2901777A1 (fr) * 2013-03-14 2014-10-02 Cardiovascular Systems, Inc. Commutateur tactile ayant une couche permeable aux gaz, impermeable aux liquides
TWI559350B (zh) 2013-05-27 2016-11-21 蘋果公司 低行程薄膜按鍵、用於製造低行程薄膜按鍵之方法及關開總成
US9908310B2 (en) 2013-07-10 2018-03-06 Apple Inc. Electronic device with a reduced friction surface
WO2015047606A1 (fr) 2013-09-30 2015-04-02 Apple Inc. Dessus de touche à épaisseur réduite
JP2016532232A (ja) 2013-09-30 2016-10-13 アップル インコーポレイテッド 厚みを薄くしたキーキャップ
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 (fr) 2014-08-15 2016-02-18 Apple Inc. Clavier équipé de tissu
US10082880B1 (en) 2014-08-28 2018-09-25 Apple Inc. System level features of a keyboard
WO2016053907A1 (fr) 2014-09-30 2016-04-07 Apple Inc. Commutateur à dôme et logement de commutateur destinés à un ensemble clavier
EP3295467A1 (fr) 2015-05-13 2018-03-21 Apple Inc. Clavier pour dispositif électronique
EP3295466B1 (fr) 2015-05-13 2023-11-29 Apple Inc. Ensembles clavier ayant des épaisseurs réduites et procédé de formation d'ensembles clavier
US9997308B2 (en) 2015-05-13 2018-06-12 Apple Inc. Low-travel key mechanism for an input device
WO2016183490A1 (fr) 2015-05-13 2016-11-17 Leong Craig C Éclairage uniforme de touches
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
WO2019023357A1 (fr) 2017-07-26 2019-01-31 Apple Inc. Ordinateur doté d'un clavier
CN111492451A (zh) 2017-09-26 2020-08-04 迈瑞特汽车电子***有限责任公司 弹性键盘
JP6936760B2 (ja) 2018-04-05 2021-09-22 株式会社東海理化電機製作所 スイッチ装置
JP6770548B2 (ja) * 2018-04-05 2020-10-14 株式会社東海理化電機製作所 スイッチ装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809770C2 (fr) 1988-03-23 1991-01-10 Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De
DE4212562A1 (de) 1992-04-15 1993-10-21 Buch Elektronik Gmbh Folientastatur

Family Cites Families (9)

* 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
FR2196515B1 (fr) * 1972-08-18 1977-09-16 Matsushita Electric Ind Co Ltd
US3888117A (en) * 1973-07-16 1975-06-10 Minnesota Mining & Mfg Pressure sensor and instrument utilizing same
CH645205A5 (de) * 1978-12-01 1984-09-14 Maag Gummi Schaltmatte.
US4453061A (en) * 1981-06-09 1984-06-05 Ryutaro Tamura Capacitance type switch having dust-free interior
JPS58123529U (ja) * 1982-02-16 1983-08-23 アルプス電気株式会社 キ−ボ−ドスイツチ
JPS59101725A (ja) * 1982-11-30 1984-06-12 日本メクトロン株式会社 キ−ボ−ドスイツチ
DE9012407U1 (de) * 1990-08-30 1992-01-09 Platz, Karl Otto, 5226 Reichshof Druckschaltelement
DE4312664C1 (de) * 1993-04-20 1994-07-28 Loh Kg Rittal Werk Filterlüfter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809770C2 (fr) 1988-03-23 1991-01-10 Preh-Werke Gmbh & Co Kg, 8740 Bad Neustadt, De
DE4212562A1 (de) 1992-04-15 1993-10-21 Buch Elektronik Gmbh Folientastatur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113257603A (zh) * 2021-06-17 2021-08-13 昆山兴协和科技股份有限公司 薄膜开关

Also Published As

Publication number Publication date
DE19608773A1 (de) 1997-09-11
ES2214561T3 (es) 2004-09-16
EP0795882A3 (fr) 1999-01-20
US5874700A (en) 1999-02-23
EP0795882B1 (fr) 2004-03-17
DE59711404D1 (de) 2004-04-22
DE19608773C2 (de) 1998-11-26

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