EP1215696B1 - Ensemble d'un clavier à touches pour un dispositif électrique - Google Patents

Ensemble d'un clavier à touches pour un dispositif électrique Download PDF

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Publication number
EP1215696B1
EP1215696B1 EP20010129650 EP01129650A EP1215696B1 EP 1215696 B1 EP1215696 B1 EP 1215696B1 EP 20010129650 EP20010129650 EP 20010129650 EP 01129650 A EP01129650 A EP 01129650A EP 1215696 B1 EP1215696 B1 EP 1215696B1
Authority
EP
European Patent Office
Prior art keywords
keypad
arrangement according
key element
contact
mat
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 - Lifetime
Application number
EP20010129650
Other languages
German (de)
English (en)
Other versions
EP1215696A2 (fr
EP1215696A3 (fr
Inventor
Andreas Brooren
Frank Trummer
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.)
Gigaset Communications GmbH
Original Assignee
Gigaset Communications 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 Gigaset Communications GmbH filed Critical Gigaset Communications GmbH
Publication of EP1215696A2 publication Critical patent/EP1215696A2/fr
Publication of EP1215696A3 publication Critical patent/EP1215696A3/fr
Application granted granted Critical
Publication of EP1215696B1 publication Critical patent/EP1215696B1/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
    • H01H13/78—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 the contacts or the contact sites
    • H01H13/785—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 the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • 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
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/032—Conductive polymer; Rubber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/008—Part of substrate or membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/012—Joy stick type
    • 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
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/04—Operating part movable angularly in more than one plane, e.g. joystick
    • H01H25/041—Operating part movable angularly in more than one plane, e.g. joystick having a generally flat operating member depressible at different locations to operate different controls

Definitions

  • the present invention relates to a keyboard assembly for an electronic device, in particular for a mobile electronic device, such as a mobile terminal, comprising at least one keymat with at least one operating element, wherein the at least one operating element on an actuating side of the at least one keypad mat projects and the at least one operating element is provided on one of the actuating side remote contact side with electrically conductive contact means, wherein further the operating element is displaceable when pressurized from a rest position to a contact position, in which at least two associated electrical contacts of an electronic circuit via the contact means electrically connected or are connected.
  • FIG. 6 shows a keyboard arrangement 210 according to the prior art.
  • This keyboard assembly 210 is modular and includes a keyboard mat 212 on which key elements 214 are formed.
  • the keypad mat 212 is adhesively bonded to a polycarbonate foil 216, wherein this polycarbonate foil 216 in the region of the key elements 214 of the key mat has dome-shaped elevations 218 which are embossed into the polycarbonate foil 216.
  • a spacer plate 220 is disposed with openings in the region of the cap 218. From this, the keyboard assembly 210 is connected via a connecting layer 222 to a printed circuit board 224, which is mechanically reinforced by a reinforcing plate 226.
  • the key element is moved down to the top of the dome 218 associated therewith and exerts pressure on this dome 218 from. Under the action of this compressive force, the dome 218 bends from its initial position shown in FIG. 6 by a solid line into a deflection position shown by a dotted line in FIG. 6 and designated by 218 '.
  • the polycarbonate foil 216 is provided on its side facing away from the keypad mat 212 at least in the region of the calottes 218 with a contact lacquer, for example of a graphite-silver mixture or the like.
  • a contact lacquer for example of a graphite-silver mixture or the like.
  • the surface of the dome provided with the contact lacquer touches the printed circuit board and can thus electrically connect two contacts 228a and 228b extending on the printed circuit board.
  • the key element 214 moves back to the starting position shown in Figure 6.
  • the cap 218 moves from the deflection position according to 218 'back to the starting position. As a result, the electrical connection between the two contacts 228a and 228b is canceled.
  • the invention provides that the keypad is provided in the region of at least one operating element on its contact side with a contact body of electrically conductive, elastically deformable material.
  • a contact body of electrically conductive, elastically deformable material This makes it possible to electrically conduct over a relatively large area an electrical connection between two electrical contacts of an electronic circuit, for example, on the circuit board, and this with a simple construction of the keyboard assembly, since this comprises only the Tasturmatte and contact body formed thereon.
  • a reliable and against deposition of dust or dirt particles on the circuit board insensitive functioning of the keyboard assembly is guaranteed.
  • the contact body can be inventively provided that this is made of an electrically conductive elastic plastic material, preferably made of an electrically conductive soft elastic rubber material, in particular of electrically conductive silicone material.
  • an electrically conductive elastic plastic material preferably made of an electrically conductive soft elastic rubber material, in particular of electrically conductive silicone material.
  • Such a choice of material provides for a reliable operation of the keyboard assembly with a long service life.
  • the materials mentioned are available at low cost and easy to handle in manufacturing without the need for special precautions.
  • the contact body has a substantially cylindrical or bulbous shape, preferably substantially circular cylindrical shape, and is fixed with one of its bases on the contact side of the control element. It may also include conical sections to facilitate assembly. If the contact body is then pressed upon pressurization together with the operating element on the electronic circuit, it may deform accordingly, wherein - as already stated above - the elastic material evades any existing dust particles and which increases correspondingly under the pressurization of the contact surface.
  • the at least one operating element is integrally formed on the keypad mat.
  • the formation of the at least one operating element integrally on the keypad mat makes it possible to produce the keypad assembly as a unitary assembly, whereby the further assembly of the keyboard assembly or provided with this electronic device is simplified.
  • the invention can be provided that the at least one operating element is connected via a resilient connection region with the keypad mat, wherein the at least one operating element is displaceable under pressure of elastic deformation of the connecting portion against a spring force from the rest position to the contact position and when canceling the pressurization automatically moved back to the rest position.
  • a resilient connection region with the keypad mat, wherein the at least one operating element is displaceable under pressure of elastic deformation of the connecting portion against a spring force from the rest position to the contact position and when canceling the pressurization automatically moved back to the rest position.
  • the keypad mat made of soft elastic material, preferably made of rubber, in particular made of silicone. This choice of material ensures reliable operation and good tactile properties of the keyboard mat controls with low material and manufacturing costs. This is the case in particular if the at least an operating element is designed as a push button.
  • the keypad comprises a plurality of grouped controls and that this plurality of control elements is assigned a common key element, wherein the key element is tumble when pressurized and / or depressible and wherein upon pressurization of the common key element at least an associated this control element from the rest position is displaced into the contact position.
  • a wobbling movable and / or depressible key element allows easy operation of complex menu structures of the electronic device. This is necessary, for example, in mobile radio terminals, which are equipped with ever more comprehensive functions, which can be selected via hierarchical menu structures.
  • the invention is particularly suitable for a reliable constructive realization of such key elements with low production costs and low production costs.
  • the key element for example, as a so-called navigation key, with which a navigation in four or possibly eight in regular Angular distances over 360 ° distributed directions should be possible
  • the key element four controls are assigned, wherein the four controls are arranged in the region of the vertices of the contour of the key element inscribed square.
  • each of the key element associated controls has a shaft portion and that the key element has corresponding recesses, which for the storage of the key element on this associated control elements respectively pick up a shaft section.
  • the key element of a rubber material, preferably made of silicone and / or preferably with higher hardness than the keypad mat and / or the contact body is made.
  • the invention further relates to an electronic device, in particular a mobile electronic device, such as a mobile radio terminal, comprising a keyboard arrangement according to one of the preceding claims.
  • a keyboard arrangement is designated generally by 10. This is for installation in an electronic device, not shown, in the example, a mobile terminal, provided and includes a keyboard mat 12. From the keypad mat 12, in particular from the actuation side 14 of several jump control elements 16 before, which are designed as push buttons. Furthermore, the keyboard assembly 10 includes a key element 18 which is tiltable about the tilt axes A and B shown in Figure 2 in a total of four tilting directions. In the right in Figure 1 middle portion of the keyboard assembly 10, a skirt 20 is provided with a central opening 22, in which a microphone can be used. Further, in the keypad mat 12 recesses 24 in the immediate vicinity of the enclosure 20 and notches 26 are provided which serve to fix the keypad mat 12 in the electronic device, not shown. The keypad mat 12 is made of a soft elastic silicone material, wherein the push buttons 16 are integrally formed with the keypad mat 12.
  • FIG. 3 the keypad mat 12 is shown omitting the key element 18.
  • This figure shows that the key element 18 is mounted on four control elements 28.
  • Each operating element 28 comprises a pin-shaped shaft 30, a substantially circular-cylindrical flange 32 and a conical connecting portion 34, via which the control element 28 is connected to the keypad mat 12.
  • FIG. 2 shows the keyboard arrangement according to the invention together with the wobbling movable key element 18.
  • This is mounted on the four arranged at corners of a square controls 28 in parallel to the actuating side 14 of the keyboard assembly 10 not displaceable manner ,
  • the key element 18 recesses 36, in each of which a shaft 30 of an operating element 28 is inserted.
  • the controls 28 are conically formed at their keyboard matte distal ends 38.
  • the key element 18 lies with its underside 40 on a step surface 42 of each operating element 28, wherein the step surface 42 results from the transition from the shaft 30 to the flange 32.
  • FIG. 5 also shows how the connecting region 34 connects the operating element 28 to the keypad mat 12.
  • the connecting region 34 is configured as a truncated cone with a small wall thickness.
  • a pill-shaped contact body 46 is formed below each operating element.
  • This contact body 46 is made of conductive silicone low (Shore A) hardness.
  • the contact body 46 is fixed to the contact side 44 of the keypad mat 12 in the region of the operating elements 28 by gluing. If, for example, one presses on the key element 18 in accordance with the arrow P according to FIG. 5, then the operating element is displaced out of its rest position shown in FIG. 5 while deforming the connecting region 34 into a contact position.
  • the invention shows, compared to the prior art shown in Figure 6, a much simplified keyboard assembly, which is inexpensive to produce and provides high reliability. If, again referring to FIG. 5, the situation is that dust deposits are present in the region of the two contacts 50, 52 of the printed circuit board, the invention permits a secure electrical connection of the two contacts 50, 52 despite these dust deposits Contact body 46 under the pressurization according to arrow P deformed due to its soft elastic material properties and thus dodge deposits and can provide a reliable contact of the contacts 50 and 52. Furthermore, two adjacent control elements 28, as shown in Figure 5, can be arranged in close proximity to each other, without their operation would be affected. Thereby, a further miniaturization of the keyboard assembly in accordance with a required miniaturization of the associated electronic device is possible. Moreover, the invention can be due to the relatively simple structural design, the cost available materials for the realization of the invention and the favorable properties in terms of contacting Of PCB contacts achieve significant savings in the production of the keyboard assembly according to the invention and in the use of corresponding circuit boards.

Landscapes

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

Claims (13)

  1. Ensemble de clavier pour un dispositif électronique, en particulier pour un dispositif électronique mobile tel que, par exemple, un terminal radio mobile, comprenant au moins un clavier avec au moins un élément de commande, l'au moins un élément de commande faisant saillie sur un côté d'actionnement de l'au moins un clavier et l'au moins un élément de commande étant pourvu de moyens de contact électriquement conducteurs sur un côté de contact opposé au côté d'actionnement, l'élément de commande pouvant, à l'application d'une pression, être déplacé d'une position de repos vers une position de contact dans laquelle au moins deux contacts électriques d'un circuit électronique associés audit élément de commande peuvent être reliés ou sont reliés de manière électriquement conductrice par l'intermédiaire des moyens de contact, caractérisé en ce que sont prévus au moins trois éléments de commande dont l'un au moins se présente sous la forme d'une touche à pression (16) et au moins deux sous la forme d'un élément de commande (28), qui présente une section de tige (30), pour un élément de touche (18) associé avec des évidements (36) correspondant à la section de tige (30) respective, lesquels reçoivent chacun une section de tige (30) pour loger l'élément de touche (18) sur les éléments de commande (28) qui lui sont associés.
  2. Ensemble de clavier selon la revendication 1, caractérisé en ce que les moyens de contact comprennent un corps de contact (46) associé séparément à chaque élément de commande (16, 28) et composé de matière électriquement conductrice et déformable élastiquement.
  3. Ensemble de clavier selon la revendication 1 ou 2, caractérisé en ce que le corps de contact (46) est fabriqué en une matière plastique élastique et électriquement conductrice, de préférence en une matière caoutchoutée élastique souple et électriquement conductrice, en particulier en matière siliconée électriquement conductrice.
  4. Ensemble de clavier selon l'une des revendications 1 à 3, caractérisé en ce que le corps de contact (46) est de forme sensiblement cylindrique ou bombée, de préférence de forme sensiblement cylindrique circulaire, et est déterminé tel qu'il ait l'une de ses surfaces de base sur le côté de contact (44) de l'élément de commande (16, 28).
  5. Ensemble de clavier selon l'une des revendications précédentes, caractérisé en ce que les au moins trois éléments de commande (16, 28) sont réalisés intégralement sur le clavier (12).
  6. Ensemble de clavier selon l'une des revendications précédentes, caractérisé en ce que les au moins trois éléments de commande (16, 28) sont assemblés au clavier (12) par l'intermédiaire d'une zone d'assemblage élastique (34), les au moins trois éléments de commande (16, 28), à l'application d'une pression (P), pouvant être déplacés, avec une déformation élastique de la zone d'assemblage (34), à l'encontre d'une force élastique pour passer de la position de repos à la position de contact et revenant automatiquement à la position de repos lorsque l'application d'une pression (P) cesse.
  7. Ensemble de clavier selon la revendication 6, caractérisé en ce que la zone d'assemblage élastique (34) est réalisée avec une faible épaisseur de paroi et se rétrécit du clavier (12) vers l'élément de commande (16, 28).
  8. Ensemble de clavier selon l'une des revendications précédentes, caractérisé en ce que le clavier (12) est fabriquée en matière élastique souple, de préférence en caoutchouc, et plus particulièrement en silicone.
  9. Ensemble de clavier selon l'une des revendications précédentes, caractérisé en ce que le clavier (12) comprend une pluralité d'éléments de commande (28) disposés en groupe et un élément de touche (18) commun est associé à cette pluralité d'éléments de commande (28), l'élément de touche (18), à l'application d'une pression (P), pouvant se déplacer ou/et s'enfoncer dans un mouvement de nutation et, à l'application d'une pression (P) sur l'élément de touche (18) commun, au moins un élément de commande (28) associé à celui-ci pouvant être déplacé de la position de repos vers la position de contact.
  10. Ensemble de clavier selon la revendication 9, caractérisé en ce que quatre éléments de commande (28) sont affectés à l'élément de touche (18), les quatre éléments de commande (28) étant situés dans la zone des points d'angle d'un carré inscrit dans le contour de l'élément de touche (18).
  11. Ensemble de clavier selon la revendication 9 ou 10, caractérisé en ce que l'élément de touche (18) présente un contour sensiblement circulaire.
  12. Ensemble de clavier selon l'une des revendications 9 à 11, caractérisé en ce que l'élément de touche (18) est fabriqué en une matière caoutchoutée, de préférence en silicone ou/et de préférence avec une dureté supérieure à celle du clavier (12) ou/et du corps de contact (46).
  13. Dispositif électronique, en particulier dispositif électronique mobile, tel que, par exemple, un terminal radio mobile, comprenant un ensemble de clavier (10) selon l'une des revendications précédentes.
EP20010129650 2000-12-14 2001-12-12 Ensemble d'un clavier à touches pour un dispositif électrique Expired - Lifetime EP1215696B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10062380 2000-12-14
DE2000162380 DE10062380A1 (de) 2000-12-14 2000-12-14 Tastaturanordnung für eine elektronische Vorrichtung und elektronische Vorrichtung

Publications (3)

Publication Number Publication Date
EP1215696A2 EP1215696A2 (fr) 2002-06-19
EP1215696A3 EP1215696A3 (fr) 2004-03-10
EP1215696B1 true EP1215696B1 (fr) 2007-11-07

Family

ID=7667165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010129650 Expired - Lifetime EP1215696B1 (fr) 2000-12-14 2001-12-12 Ensemble d'un clavier à touches pour un dispositif électrique

Country Status (2)

Country Link
EP (1) EP1215696B1 (fr)
DE (2) DE10062380A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045871B4 (de) * 2007-09-25 2009-10-29 Albrecht Jung Gmbh & Co. Kg Tastenfeld
DE102008021606B4 (de) * 2008-04-30 2011-07-28 Gigaset Communications GmbH, 81379 Tastaturmatte

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144582B (en) * 1983-08-05 1987-06-10 Nintendo Co Ltd Multi-directional electrical switch
GB8402974D0 (en) * 1984-02-03 1984-03-07 Npm Int Switches and keyboards
FR2566574B1 (fr) * 1984-06-26 1986-12-12 Tabur Caoutchouc Clavier pour boitier de commande d'un appareil electrique
JPS62252016A (ja) * 1986-04-24 1987-11-02 富士ポリマテック株式会社 接点ゴム導通部の形成法
JP2578870Y2 (ja) * 1990-02-02 1998-08-20 北川工業 株式会社 押し釦スイッチ
US6102802A (en) * 1997-10-01 2000-08-15 Armstrong; Brad A. Game controller with analog pressure sensor(s)
US5521342A (en) * 1994-12-27 1996-05-28 General Motors Corporation Switch having combined light pipe and printed circuit board
JPH1012088A (ja) * 1996-06-25 1998-01-16 Oki Electric Ind Co Ltd ポリドームスイッチの構造
DE19746843A1 (de) * 1997-10-23 1999-05-12 Bosch Gmbh Robert Multifunktionstaste
DE29821579U1 (de) * 1998-12-02 1999-05-27 Detewe-Deutsche Telephonwerke Ag & Co, 10997 Berlin Einstückige Tastatur

Also Published As

Publication number Publication date
DE50113229D1 (de) 2007-12-20
EP1215696A2 (fr) 2002-06-19
DE10062380A1 (de) 2002-07-04
EP1215696A3 (fr) 2004-03-10

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