WO2003025959A1 - Keypad for a communication terminal - Google Patents

Keypad for a communication terminal Download PDF

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Publication number
WO2003025959A1
WO2003025959A1 PCT/DE2002/003435 DE0203435W WO03025959A1 WO 2003025959 A1 WO2003025959 A1 WO 2003025959A1 DE 0203435 W DE0203435 W DE 0203435W WO 03025959 A1 WO03025959 A1 WO 03025959A1
Authority
WO
WIPO (PCT)
Prior art keywords
keyboard
keys
elastic film
beads
upper shell
Prior art date
Application number
PCT/DE2002/003435
Other languages
German (de)
French (fr)
Inventor
Daniel Marckardt
Christian Voigt
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DE50214554T priority Critical patent/DE50214554D1/en
Priority to KR10-2004-7003751A priority patent/KR20040031787A/en
Priority to AT02774356T priority patent/ATE475978T1/en
Priority to EP02774356A priority patent/EP1425769B1/en
Publication of WO2003025959A1 publication Critical patent/WO2003025959A1/en

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H01H2223/003—Membrane embracing all keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/034—Bezel
    • H01H2223/0345—Bezel with keys positioned directly next to each other without an intermediate bezel or frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/022—Telephone handset
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/03—Key modules mounted on support plate or frame
    • H01H2233/034—Snap coupling
    • H01H2233/036—Snap coupling with limited freedom

Definitions

  • the present invention relates to a keyboard for a communication terminal consisting of a lower and upper shell, openings being provided in the upper shell for the keys of the keyboard and the individual keys having webs on their undersides for actuating corresponding contacts on a printed circuit board.
  • the object of the present invention is to provide a keyboard that is as flat and seamless as possible, in which the gap dimensions between the individual keys are small and even, in order to allow greater design freedom than in the previous keyboards.
  • an elastic film is arranged between the top of the upper shell and the undersides of the keys, which beads have beads which essentially limit the areas corresponding to the individual keys and serve as a reset device.
  • the keyboard according to the invention is distinguished by an extremely flat structure, the individual keys being protected against contamination, e.g. B. are protected by dust. At the same time, the required ESD resistance is guaranteed.
  • FIG. 1 shows a cross-sectional view through a partially sectioned perspective of a first embodiment of the keyboard according to the invention
  • Figure 2 is a plan view of the elastic film of the keyboard shown in Figure 1, and
  • FIG. 3 shows a cross-sectional view through a partially sectioned perspective of a second embodiment of the keyboard according to the invention
  • the illustrated keyboard of the first embodiment essentially consists of the individual keys, e.g. 1, 2, 3, and the elastic film 4.
  • the elastic film can e.g. be a silicone mat.
  • buttons 1, 2, 3 lie flat with their undersides on parts of the top of the silicone mat 4, as can be clearly seen from FIG.
  • the individual areas of the silicone mat 4 corresponding to the buttons are each delimited by beads 11, which are formed in the shape of an rim and are directed downwards. These beads rest on parts of the upper housing shell 5.
  • the parts of the upper housing shell 5 below the keyboard and the silicone mat 4 have openings 12, 13 lying one above the other, through which a vertical web 6, which is firmly connected to the single button protrudes. These webs serve to actuate corresponding contacts arranged on a printed circuit board in the mobile radio device.
  • resilient hooks 8, 9, 10 are fastened, which likewise protrude through openings in the upper housing shell 5 and the silicone mat 4 and come into engagement with the upper housing shell 5 in order to prevent the individual keys from jumping off.
  • FIG. 3 shows a second embodiment of the keyboard according to the invention.
  • FIG. 3 also shows only part of a keyboard for a mobile radio device.
  • the keyboard shown the second embodiment consists essentially of the individual keys, for. B. 21, 22, 23, and the elastic film 24.
  • This elastic film 24 can, for. B. be a silicone mat.
  • buttons e.g. B. 21, 22, 23, lie with their lower edge regions on the bead 31 delimiting their key region.
  • the elastic film 24 serves to seal the interior of the housing against dust and to provide the restoring forces for the individual keys.
  • the parts of the upper housing shell 25 and the silicone mat 24 below the keyboard have openings 32, 33 one above the other, through which a vertical web 26, which is firmly connected to the individual key, projects.
  • resilient hooks 28, 29, 30 are fastened to the respective keys, which likewise protrude through openings in the upper housing shell 25 and the silicone mat 24 and come into engagement with the upper housing shell 25 in order to prevent the individual keys from jumping off.

Abstract

The invention relates to a keypad for a communication terminal, comprising a lower and upper shell (5). An elastic foil (4) is arranged between the upper side of the upper shell and the lower side of the keys (1, 2, 3) of the keypad. Said foil presents corrugations (11), which substantially delimit the surfaces corresponding to each key (1, 2, 3) and serve as a return device.

Description

Beschreibungdescription
Tastatur für ein Kom unikationsendgeratKeyboard for a communication terminal
Die vorliegende Erfindung betrifft eine Tastatur für ein aus Unter- und Oberschale bestehendes Kommunikationsendgerat, wobei in der Oberschale Durchbruche für die Tasten der Tastatur vorgesehen sind und wobei die einzelnen Tasten an ihren Unterseiten Stege zur Betätigung entsprechender Kontakte auf einer Leiterplatte aufweisen.The present invention relates to a keyboard for a communication terminal consisting of a lower and upper shell, openings being provided in the upper shell for the keys of the keyboard and the individual keys having webs on their undersides for actuating corresponding contacts on a printed circuit board.
Aufgabe der vorliegenden Erfindung ist es, eine möglichst flache und steglose Tastatur anzugeben, bei der die Spaltmaße zwischen den einzelnen Tasten gering und gleichmäßig sind, um eine größere Designfreiheit als bei den bisherigen Tastaturen zu ermöglichen.The object of the present invention is to provide a keyboard that is as flat and seamless as possible, in which the gap dimensions between the individual keys are small and even, in order to allow greater design freedom than in the previous keyboards.
Diese Aufgabe wird erfmdungsgemaß dadurch gelost, dass zwischen Oberseite der Oberschale und den Unterseiten der Tasten eine elastische Folie angeordnet ist, welche Wulste aufweist, die im Wesentlichen jeweils die den einzelnen Tasten entsprechenden Flachen begrenzen und als Ruckstelleinrichtung dienen.This object is achieved according to the invention in that an elastic film is arranged between the top of the upper shell and the undersides of the keys, which beads have beads which essentially limit the areas corresponding to the individual keys and serve as a reset device.
Die erfmdungsgemaße Tastatur zeichnet sich durch einen extrem flachen Aufbau aus, wobei die einzelnen Tasten gegen Verschmutzung, z. B. durch Staub, geschützt sind. Gleichzeitig ist die erforderliche ESD-Festigkeit gewährleistet.The keyboard according to the invention is distinguished by an extremely flat structure, the individual keys being protected against contamination, e.g. B. are protected by dust. At the same time, the required ESD resistance is guaranteed.
Weitere zweckmäßige Ausgestaltungen der Erfindung ergeben sich aus den Unteranspruchen sowie der nachfolgenden Beschreibung von Ausfuhrungsbeispielen der vorliegenden Erfindung.Further expedient refinements of the invention result from the subclaims and the following description of exemplary embodiments of the present invention.
Die erfindungsmassige Tastatur wird anhand von in der Zeichnung dargestellten Ausfuhrungsbeispielen naher beschrieben. In der Zeichnung zeigenThe keyboard according to the invention is described in more detail with reference to exemplary embodiments shown in the drawing. Show in the drawing
Figur 1 eine Querschnittsansicht durch eine teilweise geschnittene Perspektive einer ersten Ausfuhrungsform der er- fmdungsgemaßen Tastatur,FIG. 1 shows a cross-sectional view through a partially sectioned perspective of a first embodiment of the keyboard according to the invention,
Figur 2 eine Draufsicht auf die elastische Folie der in Figur 1 dargestellten Tastatur, undFigure 2 is a plan view of the elastic film of the keyboard shown in Figure 1, and
Figur 3 eine Querschnittsansicht durch eine teilweise geschnittene Perspektive einer zweiten Ausfuhrungsform der er- fmdungsgemaßen TastaturFIG. 3 shows a cross-sectional view through a partially sectioned perspective of a second embodiment of the keyboard according to the invention
In der Zeichnung ist jeweils ein Teil einer erfmdungsgemaßen Tastatur für ein Mobilfunkgerat dargestellt.In the drawing, part of a keyboard according to the invention for a mobile radio device is shown.
Die dargestellte Tastatur der ersten Ausfuhrungsform besteht im wesentlichen aus den einzelnen Tasten, z.B. 1, 2, 3, sowie der elastischen Folie 4. Die elastische Folie kann z.B. eine Silikonmatte sein.The illustrated keyboard of the first embodiment essentially consists of the individual keys, e.g. 1, 2, 3, and the elastic film 4. The elastic film can e.g. be a silicone mat.
Die einzelnen Tasten 1, 2, 3 liegen mit ihren Unterseiten plan auf Teilen der Oberseite der Silikonmatte 4 auf, wie aus Figur 1 deutlich zu entnehmen ist.The individual buttons 1, 2, 3 lie flat with their undersides on parts of the top of the silicone mat 4, as can be clearly seen from FIG.
Die einzelnen den Tasten entsprechenden Bereiche der Silikonmatte 4 werden jeweils durch Wulste 11, welche rmnenformig ausgebildet und nach unten gerichtet sind, begrenzt. Diese Wulste liegen auf Teilen der Gehauseoberschale 5 auf.The individual areas of the silicone mat 4 corresponding to the buttons are each delimited by beads 11, which are formed in the shape of an rim and are directed downwards. These beads rest on parts of the upper housing shell 5.
Aus der Figur 2 ist zu erkennen, dass bei dieser Ausfuhrungsform die Rinnen der Wulste 11 zwischen den einzelnen Tastenbereichen ein zusammenhangendes System bilden.It can be seen from FIG. 2 that in this embodiment the grooves of the beads 11 form a coherent system between the individual key areas.
Die unterhalb der Tastatur liegenden Teile der Gehauseoberschale 5 sowie die Silikonmatte 4 weisen uberemanderliegende Durchbruche 12, 13 auf, durch welche ein senkrechter Steg 6, welcher mit der einzelnen Taste fest verbunden ist, hindurchragt. Diese Stege dienen zur Betätigung von entsprechenden auf einer Leiterplatte im Mobilfunkgerät angeordneten Kontakten.The parts of the upper housing shell 5 below the keyboard and the silicone mat 4 have openings 12, 13 lying one above the other, through which a vertical web 6, which is firmly connected to the single button protrudes. These webs serve to actuate corresponding contacts arranged on a printed circuit board in the mobile radio device.
Weiterhin sind an den jeweiligen Tasten z.B. federnde Haken 8, 9, 10 befestigt, welche ebenfalls durch Öffnungen in der Gehäuseoberschale 5 und der Silikonmatte 4 hindurchragen und an der Gehäuseoberschale 5 in Eingriff kommen, um ein Ab- springen der einzelnen Tasten zu verhindern.Furthermore, e.g. resilient hooks 8, 9, 10 are fastened, which likewise protrude through openings in the upper housing shell 5 and the silicone mat 4 and come into engagement with the upper housing shell 5 in order to prevent the individual keys from jumping off.
Figur 3 zeigt eine zweite Ausfuhrungsform der erfindungsgemäßen Tastatur. Auch in Figur 3 ist jeweils nur ein Teil einer Tastatur für ein Mobilfunkgerät dargestellt.Figure 3 shows a second embodiment of the keyboard according to the invention. FIG. 3 also shows only part of a keyboard for a mobile radio device.
Die dargestellte Tastatur der zweiten Ausfuhrungsform besteht im wesentlichen aus den einzelnen Tasten, z. B. 21, 22, 23, sowie der elastischen Folie 24. Diese elastische Folie 24 kann z. B. eine Silikonmatte sein.The keyboard shown the second embodiment consists essentially of the individual keys, for. B. 21, 22, 23, and the elastic film 24. This elastic film 24 can, for. B. be a silicone mat.
Innerhalb der elastischen Folie 24 sind jeweils die einzelnen Tastenbereiche begrenzende rinnenförmig nach oben gerichtete Wülste 31 ausgebildet. Die einzelnen Tasten, z. B. 21, 22, 23, liegen mit ihren unteren Randbereichen jeweils auf dem ihren Tastenbereich begrenzenden Wulst 31 auf.Inside the elastic film 24, the individual key areas bounding ridges 31 are formed. The individual buttons, e.g. B. 21, 22, 23, lie with their lower edge regions on the bead 31 delimiting their key region.
Auch bei diesem Ausführungsbeispiel dient die elastische Folie 24 zur Abdichtung des Gehäuseinneren gegen Staub sowie zur Bereitstellung der Rückstellkräfte für die einzelnen Tas- ten.In this exemplary embodiment too, the elastic film 24 serves to seal the interior of the housing against dust and to provide the restoring forces for the individual keys.
Auch bei diesem Ausführungsbeispiel weisen die unterhalb der Tastatur liegenden Teile der Gehäuseoberschale 25 sowie der Silikonmatte 24 übereinanderliegende Durchbrüche 32, 33 auf, durch welche ein senkrechter Steg 26, welcher mit der einzelnen Taste fest verbunden ist, hindurchragt. Diese Stege die- nen zur Betätigung von entsprechenden auf einer Leiteplatte im Mobilfunkgerät angeordneten Kontakten.In this exemplary embodiment, too, the parts of the upper housing shell 25 and the silicone mat 24 below the keyboard have openings 32, 33 one above the other, through which a vertical web 26, which is firmly connected to the individual key, projects. These bridges NEN for actuating corresponding contacts arranged on a circuit board in the mobile device.
Weiterhin sind an den jeweiligen Tasten federnde Haken 28, 29, 30 befestigt, welche ebenfalls durch Öffnungen in der Gehäuseoberschale 25 und der Silikonmatte 24 hindurchragen und an der Gehäuseoberschale 25 in Eingriff kommen, um ein Abspringen der einzelnen Tasten zu verhindern. Furthermore, resilient hooks 28, 29, 30 are fastened to the respective keys, which likewise protrude through openings in the upper housing shell 25 and the silicone mat 24 and come into engagement with the upper housing shell 25 in order to prevent the individual keys from jumping off.

Claims

Patentansprüche claims
1. Tastatur für ein aus Unter- und Oberschale bestehendes Kommunikationsendgerat, wobei in der Oberschale Durchbruche für die Tasten der Tastatur vorgesehen sind und wobei die einzelnen Tasten an ihren Unterseiten Stege zur Betätigung entsprechender Kontakte auf einer Leiterplatte aufweisen, d a d u r c h g e k e n n z e i c h n e t, dass zwischen Oberseite der Oberschale (5; 25) und den Unter- selten der Tasten (1, 2, 3; 21, 22, 23) eine elastische Folie (4; 24) angeordnet ist, welche Wulste (11; 31) aufweist, die im Wesentlichen jeweils die den einzelnen Tasten entsprechenden Flachen begrenzen und als Ruckstelleinrichtung dienen.1. Keyboard for a communication terminal consisting of a lower and upper shell, openings in the upper shell being provided for the keys of the keyboard and the individual keys on their undersides having webs for actuating corresponding contacts on a printed circuit board, characterized in that between the top of the upper shell (5; 25) and the sub-rare of the buttons (1, 2, 3; 21, 22, 23) an elastic film (4; 24) is arranged, which has beads (11; 31), which essentially each Limit the areas corresponding to the individual keys and serve as a reset device.
2. Tastatur nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass die elastische Folie (4) jeweils um die einzelnen Tastenbereiche rmnenformige nach unten gerichtete Wulste (11) aufweist, wobei die einzelnen Tasten (1, 2, 3) der Tastatur mit ihren Unterseiten im wesentlichen plan auf Teilen der Oberseite der elastischen Folie (4) aufliegen und die Wulste auf den unterhalb der Tastatur liegenden Flachenteilen der Gehäuseoberschale (5) aufliegen.2. Keyboard according to claim 1, characterized in that the elastic film (4) has rmnenformige downward beads (11) around the individual key areas, the individual keys (1, 2, 3) of the keyboard with their undersides substantially flat rest on parts of the top of the elastic film (4) and the beads rest on the flat parts of the upper housing shell (5) below the keyboard.
3. Tastatur nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass die elastische Folie (24) jeweils um die einzelnen Tastenbereiche rmnenformige nach oben gerichtete Wulste (31) aufweist, wobei die einzelnen Tasten (21, 22, 23) der Tastatur mit ihren unteren Randbereichen im wesentlichen auf den Wülsten aufliegen und die Unterseite der elastischen Folie auf der Oberseite der Oberschale aufliegt.3. Keyboard according to claim 1, characterized in that the elastic film (24) rmnenformige upwardly directed beads (31) around the individual key areas, the individual keys (21, 22, 23) of the keyboard with their lower edge regions substantially lie on the beads and the underside of the elastic film rests on the top of the upper shell.
4. Tastatur nach einem der vorhergehenden Anspr che, d a d u r c h g e k e n n z e i c h n e t, dass an den Unterseiten der Tasten Elemente (9, 10; 29, 30) angebracht sind, welche durch Öffnungen in der elastischen Folie und in der Oberschale hindurchragen und zur unverlierbaren Befestigung der Tasten dienen. 4. Keyboard according to one of the preceding claims, characterized in that elements (9, 10; 29, 30) are attached to the undersides of the keys, which protrude through openings in the elastic film and in the upper shell and serve for captive fastening of the keys.
PCT/DE2002/003435 2001-09-14 2002-09-13 Keypad for a communication terminal WO2003025959A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50214554T DE50214554D1 (en) 2001-09-14 2002-09-13 KEYBOARD FOR A COMMUNICATION TERMINAL
KR10-2004-7003751A KR20040031787A (en) 2001-09-14 2002-09-13 Keypad for a communication terminal
AT02774356T ATE475978T1 (en) 2001-09-14 2002-09-13 KEYBOARD FOR A COMMUNICATIONS TERMINAL
EP02774356A EP1425769B1 (en) 2001-09-14 2002-09-13 Keypad for a communication terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145349A DE10145349A1 (en) 2001-09-14 2001-09-14 Keyboard for a communication terminal
DE10145349.3 2001-09-14

Publications (1)

Publication Number Publication Date
WO2003025959A1 true WO2003025959A1 (en) 2003-03-27

Family

ID=7699040

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/003435 WO2003025959A1 (en) 2001-09-14 2002-09-13 Keypad for a communication terminal

Country Status (6)

Country Link
EP (1) EP1425769B1 (en)
KR (1) KR20040031787A (en)
CN (1) CN1555565A (en)
AT (1) ATE475978T1 (en)
DE (2) DE10145349A1 (en)
WO (1) WO2003025959A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2562286A1 (en) * 1984-03-28 1985-10-04 Telemecanique Electrique Keyboard with multi-cell metal support plate
FR2587833A1 (en) * 1985-09-21 1987-03-27 Rheinmetall Gmbh Multiple pushbutton switch panel for machine control
US5389755A (en) * 1993-10-27 1995-02-14 Chen; Pao-Chin Computer key switch device
US6064019A (en) * 1999-04-27 2000-05-16 Buchan; Brian D. Resilient switch cover with integral actuator button
EP1028445A2 (en) * 1999-02-12 2000-08-16 Nokia Mobile Phones Ltd. Support structure for a keypad

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511941B1 (en) * 1981-09-01 1988-02-05 Telemecanique Electrique MODULAR, WATERPROOF, TOUCHPAD KEYBOARD
FI108186B (en) * 1999-09-29 2001-11-30 Nokia Mobile Phones Ltd Display frame with integrated ESD protection and user interface structure
DE10004093A1 (en) * 2000-01-31 2001-08-02 Basf Ag Keyboard elements for mobile communication devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2562286A1 (en) * 1984-03-28 1985-10-04 Telemecanique Electrique Keyboard with multi-cell metal support plate
FR2587833A1 (en) * 1985-09-21 1987-03-27 Rheinmetall Gmbh Multiple pushbutton switch panel for machine control
US5389755A (en) * 1993-10-27 1995-02-14 Chen; Pao-Chin Computer key switch device
EP1028445A2 (en) * 1999-02-12 2000-08-16 Nokia Mobile Phones Ltd. Support structure for a keypad
US6064019A (en) * 1999-04-27 2000-05-16 Buchan; Brian D. Resilient switch cover with integral actuator button

Also Published As

Publication number Publication date
DE10145349A1 (en) 2003-04-24
EP1425769B1 (en) 2010-07-28
DE50214554D1 (en) 2010-09-09
ATE475978T1 (en) 2010-08-15
EP1425769A1 (en) 2004-06-09
KR20040031787A (en) 2004-04-13
CN1555565A (en) 2004-12-15

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