EP0036570B1 - Clavier - Google Patents

Clavier Download PDF

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Publication number
EP0036570B1
EP0036570B1 EP81101815A EP81101815A EP0036570B1 EP 0036570 B1 EP0036570 B1 EP 0036570B1 EP 81101815 A EP81101815 A EP 81101815A EP 81101815 A EP81101815 A EP 81101815A EP 0036570 B1 EP0036570 B1 EP 0036570B1
Authority
EP
European Patent Office
Prior art keywords
snap
metal frame
contact
contact areas
keyboard according
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
Application number
EP81101815A
Other languages
German (de)
English (en)
Other versions
EP0036570A3 (en
EP0036570A2 (fr
Inventor
Jürgen Dipl.-Ing. Oelsch
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
Priority to AT81101815T priority Critical patent/ATE7434T1/de
Publication of EP0036570A2 publication Critical patent/EP0036570A2/fr
Publication of EP0036570A3 publication Critical patent/EP0036570A3/de
Application granted granted Critical
Publication of EP0036570B1 publication Critical patent/EP0036570B1/fr
Expired 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
    • H01H13/705—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 characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/01—Increasing rigidity; Anti-creep
    • 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
    • H01H2215/012—Positioning of individual dome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H01H2229/048—Insertion moulding

Definitions

  • the invention is based on a keyboard according to the preamble of claim 1.
  • keyboards Due to the general trend from analog to digital technology, pushbutton switches, individually or combined into keyboards, are being used to an increasing extent in electrical engineering devices, communications technology and, not least, in so-called terminals or data input devices. There are a whole range of different designs and functional principles for such keyboards, which represent the interface between man and machine. The type of stroke is of great importance for reliability, but also for human-keyboard contact. In addition to the so-called flat keyboards with a stroke of up to approx.1.5 mm, there are also keyboards with a stroke of between 1.5 and 6.35 mm depending on the application. In addition, keyboards with touch switches are of course also used. However, all keyboards with a stroke have in common that the operator should get a kind of feedback that the respective push button has been pressed.
  • a keyboard is already known (DE-A No. 1806241), in which an insulating plate is placed over a printed circuit board provided with contact points and conductor tracks, in which a number of openings are provided. There is a metal plate above the insulating material plate, in which a large number of dome-like bulges have been pressed in, the entire arrangement being such that these bulges come to lie above the openings. If one of these bulges is now pressed in, an electrical connection can be established between the contact points of the printed circuit board for the duration of the depression. If the pressure is released, the bulge snaps back into its original position. It should be difficult for this keyboard, particularly in mass production, to always obtain an even contact resistance, at least within the keyboard, and thus the same tactile feedback for the user.
  • the dome-shaped contact springs were designed as loosely mounted and separate plate springs in another known pushbutton field (DE-B No. 2132329).
  • the disc springs are secured against lateral deflection by a holding plate made of insulating material, in the openings of which they are located. Under the holding plate there is another plate made of insulating material, which also has openings that release the contact points.
  • the printed circuit board with the contact points and the conductor tracks is arranged again under this plate.
  • a keyboard is also already known (D E-A No. 2418583), in which snap elements are arranged above a printed circuit board provided with conductor tracks, said elements being made of a rubber-elastic material and having the shape of a table mountain.
  • the section above the contact points of the printed circuit board is connected to the remaining part by a foldable or foldable wall.
  • the wall is formed so that its thickness gradually decreases from an upper portion toward a central portion and gradually increases from the central portion to a lower portion with a curved surface that is inclined inward toward the inside of the snap member and away from it middle section extends to the upper section. A deformation force is thus obtained by deforming the wall, the operator feeling a kind of snap effect.
  • So-called switching mats made of non-conductive silicone rubber for keyboards are also known (DE-A No. 2822033), which have a number of dome-shaped elevations. In the hollow interior of such an elevation, a contact element made of conductive silicone rubber is arranged, which interacts with contact surfaces of a printed circuit board. Because of the shrinkage of up to 6%, which depends on the processing parameters, among other things, and the resulting manufacturing accuracy, these switch mats can be manufactured with sufficient positioning accuracy of the individual functional units with one another or with the required reproducibility only in a certain area or length.
  • the object of the present invention is to provide a keyboard of the type mentioned at the outset, which is mechanically stable and inexpensive to produce and in which the influence of the shrinkage is almost completely eliminated even with larger dimensions.
  • a carrier plate or film for a keyboard made of an insulating substrate such as hard paper or plastic net, on which conductor tracks 2 and contact areas 3 are applied in conventional patterns in desired patterns.
  • an insulating layer or also an insulating film or plate 4 which is cut out or cut out at the points where the contact surfaces 3 are located.
  • For mounting on the carrier plate it is at least partially glued flat. In the case of an insulating layer, this can be applied using screen printing technology.
  • Each of these projections has an opening 9 in the center, in which a preferably round snap element 5 is held.
  • This snap element is made of a rubber-elastic material, in particular silicone rubber, and, as can be seen from the figures, it has an arcuate edge part which is concave or convex or which can also be frustoconical, and an essentially flat upper part.
  • the mode of operation corresponds to the well-known click frog principle.
  • a contact element 6 which is made of an electrically conductive material, preferably an electrically conductive silicone rubber, and which, when the snap element is pressed, is to establish an electrical connection between the contact surfaces 3.
  • This contact element can be pre-assembled and z. B. be made by punching. Before spraying, it can be introduced into the depressions provided for this purpose and connected to the subsequently injected silicone rubber by means of a vulcanization process or else by subsequent gluing to the snap element.
  • the manufacture and introduction of the electrically conductive contact element according to the principle of two-color spraying is conceivable.
  • a cover plate 12 which can be made of metal, is arranged over the metal frame 7. It has, as can be seen from FIG. 1, a plurality of laterally angled holding legs 18, which protrude through the carrier plate 1 and possibly through the metal frame and the insulating film or insulating plate and whose ends projecting from the carrier plate are crossed.
  • the cover plate 12 has a number of sleeve-shaped holders 13 made of plastic, corresponding to the number of pushbuttons, which are injected or snapped into the cover plate.
  • Each bracket serves as a guide for an operating button 14.
  • the operating button can be provided with symbols on the top.
  • a lateral, circumferential extension 19 is formed on one side of the actuating button, which is supported on a projection 20 of the holder. The actuation button is thus secured against falling out.
  • In the interior of the actuation button there is a cavity into which a sleeve-shaped wall 22 projects.
  • the actuating button rests on the snap element with the front edge of this wall.
  • the front edge is interrupted at some points on the circumference by small cutouts 16 in order to ensure pressure equalization here too.
  • FIGS. 3 and 4 an embodiment is shown in which the edge of the opening 9 in the metal frame is smooth. 3 and 4, a further embodiment is shown, here in the edge region of the opening 9 a circumferential, double-sided projection 10 is present, which is encompassed by the edge portion of a snap element 15. This creates a kind of positive connection between the metal carrier and the snap elements, so that the resulting forces are supported by this mechanical anchoring, whereby a pretreatment of the metal with adhesion promoter can be omitted.
  • the corresponding metal frame is designated 17 in FIGS. 3 and 4.
  • Fig. 5 shows another embodiment, in particular with regard to the operating button and its storage.
  • the snap element 5 and the metal frame 7, as well as the parts underneath correspond to the exemplary embodiments already described.
  • This bracket serves to guide an actuating button, which here consists of two parts, namely a sleeve-shaped insert 24 and a cap part 25, which can carry a label if necessary.
  • the cap part is attached to the insert by a positive or non-positive connection and can be moved with it.
  • the cap part is dimensioned in such a way that it projects over the holder 23 like a roof.

Claims (7)

1. Clavier comportant une plaque de support (11) sur laquelle sont prévues des pistes conductrices (2) et des surfaces de contact (3), ainsi qu'un grand nombre de boutons-poussoirs associés aux surfaces de contact et présentant chacun un élément encliquetable (5, 15) déformable élastiquement dont l'élément de contact (6), pouvant être appliqué par déformation contre les surfaces de contact lorsqu'une tête d'actionnement (14) est manoeuvrée, se trouve normalement à une certaine distance au-dessus desdites surfaces de contact (3), caractérisé par le fait qu'il est prévu, en guise de support commun des éléments encliquetables (5, 15), un châssis métallique (7, 17) qui, reposant sur la plaque de support (11) dont il est séparé seulement par une couche isolante (4), présente des saillies (8) repoussées par matriçage en direction des têtes d'actionnement (14, 24, 25) et dont le nombre correspond à celui des éléments encliquetables, et par le fait qu'il est prévu dans chaque saillie un orifice (9) maintenant en place l'élément encliquetable (5, 15).
2. Clavier selon la revendication 1, caractérisé par le fait que la région du bord de l'orifice (9) est entourée par une zone marginale de l'élément encliquetable (15).
3. Clavier selon la revendication 2, caractérisé par le fait que la région du bord de l'orifice (9) présente de part et d'autre un biseau circonférentiel (10).
4. Clavier selon l'une des revendications 1 à 3, caractérisé par le fait que l'élément encliquetable (5, 15) est fabriqué en une matière du type caoutchouc élastique, en particulier en du caoutchouc siliconé.
5. Clavier selon l'une des revendications 1 à 4, caractérisé par le fait que les éléments encliquetables (5,15) sont mis en place par injection dans le châssis métallique en une passe de travail.
6. Clavier selon l'une des revendications 1 à 5, caractérisé par le fait que le châssis métallique (7, 17) possède, sur sa face située en regard de la plaque de support (1 ), des gorges (11) qui relient les unes aux autres les saillies (8) afin d'assurer un équilibrage de pression.
7. Clavier selon l'une des revendications 1 à 6, caractérisé par le fait que, en dessus de chaque élément encliquetable (5, 15), se trouve une tête d'actionnement (14, 24, 25) comportant s'il y a lieu des symboles dessinés sur sa face supérieure.
EP81101815A 1980-03-26 1981-03-12 Clavier Expired EP0036570B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101815T ATE7434T1 (de) 1980-03-26 1981-03-12 Tastatur.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3011674A DE3011674C2 (de) 1980-03-26 1980-03-26 Tastatur
DE3011674 1980-03-26

Publications (3)

Publication Number Publication Date
EP0036570A2 EP0036570A2 (fr) 1981-09-30
EP0036570A3 EP0036570A3 (en) 1982-08-11
EP0036570B1 true EP0036570B1 (fr) 1984-05-09

Family

ID=6098396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101815A Expired EP0036570B1 (fr) 1980-03-26 1981-03-12 Clavier

Country Status (5)

Country Link
US (1) US4366355A (fr)
EP (1) EP0036570B1 (fr)
JP (1) JPS5936375B2 (fr)
AT (1) ATE7434T1 (fr)
DE (1) DE3011674C2 (fr)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041859A1 (de) * 1980-11-06 1982-06-03 Preh Elektro Feinmechanik Tastatur
FR2508228A1 (fr) * 1981-06-19 1982-12-24 Thomson Csf Mat Tel Procede de fabrication d'un clavier de commande, et clavier de commande obtenu par ce procede
DE3228241A1 (de) * 1982-07-28 1984-02-02 Siemens Ag Tastenaggregat
US4420665A (en) * 1982-09-15 1983-12-13 Conrad Richard A Moisture proof switch assembly
US4611261A (en) * 1982-09-21 1986-09-09 Canon Kabushiki Kaisha Electronic equipment
DE3240267A1 (de) * 1982-10-30 1984-05-03 Rapp & Link Inh. Gerhard Rapp, 7730 Villingen-Schwenningen Elektrischer kontaktgeber (klingeldruecker, drucktaster, einbaukontakt, kombi- oder namensschildtaster)
JPS5987720A (ja) * 1982-11-11 1984-05-21 シャープ株式会社 押ボタンスイツチ
DE8302660U1 (de) * 1983-02-01 1983-06-16 Hans Widmaier Fabrik Fuer Apparate Der Fernmelde- Und Feinwerktechnik, 8000 Muenchen Tastenanordnung zur Auslösung von bestimmten Symbolen der Tastenoberfläche jeweils zugeordneten Schaltfunktionen oder Schaltsignalen.
US4677268A (en) * 1983-03-28 1987-06-30 The Gates Corporation Elastomeric switch control device
JPS60127620A (ja) * 1983-12-12 1985-07-08 興国ゴム工業株式会社 キ−ボ−ド用スプリングユニツト
DE3513817A1 (de) * 1985-04-17 1986-10-23 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt Gehaeuse eines fernbedienungs-handsenders
US4775574A (en) * 1986-04-14 1988-10-04 Shin Etsu Polymer Co., Ltd. Covering member of keyboard and a base plate therefor
US4789765A (en) * 1986-04-21 1988-12-06 Tektronix, Inc. Switch device
GB8719369D0 (en) * 1987-08-15 1987-09-23 Harboro Rubber Co Ltd Manufacture of contact pad arrays
CH679093A5 (fr) * 1989-06-23 1991-12-13 Fela Planungs Ag
DE4022388A1 (de) * 1990-07-13 1992-01-23 Hopt & Schuler Ddm Beschleunigungsschalter mit schnappfeder
EP0558239A1 (fr) * 1992-02-22 1993-09-01 McKechnie UK Limited Commutateur à bouton-poussoirs
US5510584A (en) * 1995-03-07 1996-04-23 Itt Corporation Sequentially operated snap action membrane switches
JPH08227629A (ja) * 1995-10-23 1996-09-03 Shin Etsu Polymer Co Ltd キーボードの製造方法
US5834714A (en) * 1996-04-30 1998-11-10 Staco Switch, Inc. Double actuator elastomeric switch
USD409151S (en) * 1997-10-21 1999-05-04 Staco Switch, Inc. Elastomeric switch
TW498710B (en) 1999-01-22 2002-08-11 Taisei Plas Co Ltd Control panel for electronic equipment and method of producing the same
KR101392462B1 (ko) 2006-10-03 2014-05-07 아바텍 인터내셔날 아게 표면실장기술을 이용한 버튼
DE112007000579B4 (de) 2006-11-27 2021-12-09 Continental Automotive Systems, Inc. ( n. d. Ges. d. Staates Delaware ) Verstärkter Schlüsselanhänger
US8456330B2 (en) * 2008-09-26 2013-06-04 Apple Inc. Configurable buttons for electronic devices
US20110304554A1 (en) * 2010-06-10 2011-12-15 Research In Motion Limited Keypad stiffener and method of manufacture
JP5720224B2 (ja) * 2010-12-14 2015-05-20 ヤマハ株式会社 スイッチ構造、電子部品設置構造、及びそれを備えた電子楽器
US8586884B2 (en) * 2011-06-22 2013-11-19 Symbol Technologies, Inc. Tamper-resistant keypad for mobile device
EP2680291B1 (fr) * 2012-06-26 2018-03-21 Samsung Electronics Co., Ltd Assemblage par clavette et dispositif électronique le comportant
US9164595B2 (en) 2013-03-08 2015-10-20 Darren C. PETERSEN Mechanical actuator apparatus for a touchscreen
US9158390B2 (en) * 2013-03-08 2015-10-13 Darren C. PETERSEN Mechanical actuator apparatus for a touch sensing surface of an electronic device
JP6165531B2 (ja) * 2013-07-17 2017-07-19 富士通コンポーネント株式会社 キーボード
JP5865433B2 (ja) * 2013-11-27 2016-02-17 京セラ株式会社 電子機器
CN104112616B (zh) * 2014-07-21 2016-04-27 南通万德科技有限公司 一种消抖的按键及其制备方法
CN105489427B (zh) * 2016-01-06 2018-05-29 广东欧珀移动通信有限公司 按键结构及移动终端设备
CN108404403A (zh) * 2018-05-29 2018-08-17 京东方科技集团股份有限公司 一种操作手柄及终端设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1806241A1 (de) * 1967-11-02 1969-08-14 Int Standard Electric Corp Druckschalter fuer Fernmeldeanlagen
DE2132329B2 (fr) * 1970-07-01 1973-12-06 Texas Instruments Inc., Dallas, Tex. (V.St.A.)
DE2418583A1 (de) * 1973-04-19 1974-11-07 Nippo Communication Ind Co Druckknopf fuer druckknopfschalter
DE2822033A1 (de) * 1978-05-19 1979-11-22 Gelusema Anstalt Verfahren zum herstellen eines spritzgussteiles aus unterschiedlichen gummimaterialien, insbesondere einer schaltmatte aus nichtleitendem und leitendem material fuer das drucktastenfeld von elektronenrechnern und spritzgussform zur herstellung dieser spritzgussteile

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Publication number Priority date Publication date Assignee Title
US3309487A (en) * 1966-01-13 1967-03-14 Ark Les Switch Corp Push button actuator
US3643041A (en) * 1970-12-30 1972-02-15 Unidynamics Phoenix Pushbutton diaphragm switch with improved dimple actuator and/or capacitance-type switch contact structure
US3860771A (en) * 1973-10-29 1975-01-14 Chomerics Inc Keyboard switch assembly with dome shaped actuator having associated underlying contactor means
US3996428A (en) * 1975-03-17 1976-12-07 Litronix, Inc. Pushbutton keyboard assembly with over center diaphragm contact
CH591724A5 (fr) * 1975-05-23 1977-09-30 Suisse Horlogerie
CA1104182A (fr) * 1977-06-24 1981-06-30 Peter Strandwitz Interrupteur fonctionnant au toucher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1806241A1 (de) * 1967-11-02 1969-08-14 Int Standard Electric Corp Druckschalter fuer Fernmeldeanlagen
DE2132329B2 (fr) * 1970-07-01 1973-12-06 Texas Instruments Inc., Dallas, Tex. (V.St.A.)
DE2418583A1 (de) * 1973-04-19 1974-11-07 Nippo Communication Ind Co Druckknopf fuer druckknopfschalter
DE2822033A1 (de) * 1978-05-19 1979-11-22 Gelusema Anstalt Verfahren zum herstellen eines spritzgussteiles aus unterschiedlichen gummimaterialien, insbesondere einer schaltmatte aus nichtleitendem und leitendem material fuer das drucktastenfeld von elektronenrechnern und spritzgussform zur herstellung dieser spritzgussteile

Also Published As

Publication number Publication date
EP0036570A3 (en) 1982-08-11
US4366355A (en) 1982-12-28
DE3011674A1 (de) 1981-10-01
DE3011674C2 (de) 1984-07-26
JPS5936375B2 (ja) 1984-09-03
ATE7434T1 (de) 1984-05-15
EP0036570A2 (fr) 1981-09-30
JPS56149728A (en) 1981-11-19

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