EP0758791B1 - Tastatur mit vereinfachter Schaltmatte samt Fixiervorrichtungen - Google Patents
Tastatur mit vereinfachter Schaltmatte samt Fixiervorrichtungen Download PDFInfo
- Publication number
- EP0758791B1 EP0758791B1 EP96110921A EP96110921A EP0758791B1 EP 0758791 B1 EP0758791 B1 EP 0758791B1 EP 96110921 A EP96110921 A EP 96110921A EP 96110921 A EP96110921 A EP 96110921A EP 0758791 B1 EP0758791 B1 EP 0758791B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- housing
- keyboard
- mat
- pad
- 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
Links
Images
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
- 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
- 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
- H01H2229/024—Packing between substrate and membrane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/034—Positioning of layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/042—Snap coupling; Snap mounting
Definitions
- the invention relates to a keyboard according to the preamble of claim 1.
- Such a keyboard is e.g. B. from the subsequently published patent application P 44 42 073.0 is known and is used to provide a reduced weight Keyboard with increased bending and torsional rigidity.
- the in this known keyboard for generating the switching characteristics and elastomers required to activate the contact points on the switching foils Switch mat is made of a relatively expensive silicone elastomer.
- the object of the present invention is therefore to provide a structure for a keyboard to propose according to the preamble of claim 1, in which the the elastomer switch mat, manufacturing costs are significantly reduced is, it should be noted that neither the mechanical stability of the Arrangement still the reliability of the circuit functions among the solution measures may suffer.
- a safety mat is shaped so that it is not immediately Areas under the key buttons for switching the switching process serving switching domes is provided with recesses, so that a network-like structure of interconnected with thin webs Wegdomen remains. Furthermore, to ensure a mechanical sufficiently stable structure and thus also to ensure the safe Switching functions over this safety mat a flat stabilization element attached, preferably in the form of a stable, thin film or plate, which has a corresponding opening at each position of a switching dome to enclose the relevant switching dome.
- Fig. 1 shows a partial section through a keyboard 1 according to the invention with a in a recess of the lower housing part 4 form-fitting inserted metal plate 2, which to increase the bending and torsional rigidity and the Improvement of the electromagnetic shielding of the interior of the housing serves.
- a multilayer switching foil set 3 rests on this metal plate.
- individual buttons 7 are mounted vertically. These buttons are provided on their underside with plungers 13, which the top of one made of an elastomeric material Switch mat 5 on one piece integrated switch domes 10.
- the safety mat 5 lies on the top of the top switching film.
- FIG. 2 shows an enlargement of a section parallel to that in FIG. 1 shown view through the key buttons 7 extending partial section.
- the switching foil set 3 which is known per se, is described only to the extent that as necessary for the immediate understanding of the present invention is.
- the switching foil set 3 consists of two outer switching foils and one the so-called spacer film in between, which the two outer Keeps foils at a certain distance from each other and thus consistently electrically isolated from each other (due to the scale used, the individual layers of the film set 3 can neither be seen in FIGS. 1 and 2).
- the spacer film In the area of the contact points at which the extensions 11 inside the Switch domes 10 when a corresponding button 7 is pressed press the upper switching film, the spacer film is provided with openings. When an extension 11 is pressed onto the upper switching film, it is opened this switching foil below the extension 11 electrical contact point through the opening in the spacer film to an underlying one electrical contact point pressed on the lower switching foil, see above that the electrical contact between the two switching foils at this point is closed.
- FIG. 3 shows a top view of the keyboard 1 used in FIG. 1 Safety mat 5 with switching domes connected via webs 17 10. Due to this network-like structure, there is a continuous surface Switching mat in the area of the recesses 16 to a considerable extent material saved, and as desired the cost share of the safety mat 5 Significantly reduced the total cost of the keyboard.
- the flat stabilizing element 15 has a large number of openings provided, each at the positions corresponding to the switching domes 10 are attached and the flange-shaped flank areas 10a of the corresponding embrace dome-shaped switching domes 10 so that the switching mat 5 by the stabilizing element 15 encompassing its switching domes 10 Moving or deforming in the lateral direction is protected.
- the stabilizing element 15 Since very inexpensive materials are used for the stabilizing element 15 can be outweighed by the savings in material costs at the network-like switching mat 5 achieved a reduction in manufacturing costs far that which occurs through the use of the stabilizing element 15 Extra cost.
- the use of such a stabilizing element is In addition, in manufacturing practice, it is also much cheaper than the one below technical-functional aspects as an alternative also conceivable gluing the network-like switching mat 5 on the switching film set underneath 3rd
- the stabilizing element 15 can in turn by on the inside of the Housing upper part 4 downwardly projecting stiffening ribs 9 be fixed by which at least a part rests on the top of the stabilizing element 15, as can be seen in particular in FIG. 2.
- a particularly high stabilization of the stabilizing element 15 and also the network-like switching mat 5 and the switching film set 3 can be achieve in that 6 pins 14 are provided on the top of the housing, the socket-shaped receiving elements integrated in the underside 4 of the housing 18 can be snapped in, in the flat stabilizing element 15, the network-like switching mat 5 and the switching film set 3 and Metal plate 2 in the region of the socket-shaped receiving elements 18 corresponding thereto Openings are attached.
- the upper part of the housing is installed with lying on the top of the flat stabilizing element 15 coming stiffening ribs 9 placed so that the metal plate 2, the Switching film set 3, the network-like switching mat 5 and the flat stabilizing element 15 are also fixed in the horizontal direction.
Landscapes
- Push-Button Switches (AREA)
Description
- Fig. 1
- einen Teilschnitt durch eine erfindungsgemäße Tastatur mit einer Schaltmatte, deren Schaltdome von Öffnungen in einem darüberliegenden flächigen Stabilisierungselement umgriffen sind;
- Fig. 2
- eine Ausschnittsvergrößerung eines in einer parallel zu der in Fig. 1 dargestellten Ansicht durch die Tastenknöpfe verlaufenden Teilschnitts; und
- Fig. 3
- eine Draufsicht auf die in der in Fig. 1 gezeigten Tastatur verwendete Schaltmatte mit netzartig verbundenen Schaltdomen.
Claims (3)
- Tastatur mit eingelegter Schaltmatte (5) und mehrlagigem Schaltfolienset (3), wobei zwischen Gehäuseunterteil (4) und der untersten der Schaltfolien im Schaltfolienset eine Metallplatte (2) formschlüssig in die Tastatur eingelegt und zwischen der Schaltmatte und dem Gehäuseunterteil eingeklemmt ist,
dadurch gekennzeichnet,daß die Schaltmatte (5) in nicht unmittelbar unter den Tastenknöpfen (7) liegenden Bereichen von zur Vermittlung des Schaltvorgangs dienenden Schaltdomen (10) mit Aussparungen (16) versehen ist, so daß ein netzartiger Aufbau von mit dünnen Stegen (17) untereinander verbundener Schaltdomen (10) verbleibt, unddaß über die Schaltmatte (5) ein flächiges Stabilisierungselement (15), bevorzugterweise in Form einer stabilen, dünnen Folie oder Platte, gelegt ist, das an jeder Position eines Schaltdoms (10) eine dazu korrespondierende Öffnung zum Umschließen des betreffenden Schaltdoms (10) umfaßt. - Tastatur nach Anspruch 1,
dadurch gekennzeichnet, daß zumindest ein Teil von am Gehäuseoberteil (6) angebrachten Versteifungsrippen (9) in am Gehäuseunterteil (4) angebrachte korrespondierende Rastelemente (12) eingreift und ein zweiter Teil auf der Oberseite des flächigen Stabilisierungselements (15) aufliegt. - 3. Tastatur nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß an der Gehäuseoberseite (6) Zapfen (14) vorgesehen sind, die in in die Gehäuseunterseite (4) integrierte buchsenförmige Aufnahmeelemente (18) einschnappbar sind, wobei in dem flächigen Stabilisierungselement (15), in der netzartig gestalteten Schaltmatte (5), in dem Schaltfolienset (3) und in der Metallplatte (2) im Bereich der buchsenförmigen Aufnahmelemente (18) dazu korrespondierende Öffnungen angebracht sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19529492A DE19529492A1 (de) | 1995-08-10 | 1995-08-10 | Tastatur mit vereinfachter Schaltmatte samt Fixierungsvorrichtungen |
DE19529492 | 1995-08-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0758791A2 EP0758791A2 (de) | 1997-02-19 |
EP0758791A3 EP0758791A3 (de) | 1997-09-17 |
EP0758791B1 true EP0758791B1 (de) | 2001-12-19 |
Family
ID=7769212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96110921A Expired - Lifetime EP0758791B1 (de) | 1995-08-10 | 1996-07-05 | Tastatur mit vereinfachter Schaltmatte samt Fixiervorrichtungen |
Country Status (3)
Country | Link |
---|---|
US (1) | US5738450A (de) |
EP (1) | EP0758791B1 (de) |
DE (2) | DE19529492A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10221315A1 (de) * | 2002-05-07 | 2003-11-20 | Mayser Gmbh & Co | Elektrische Schaltanordnung und Verfahren sowie Vorrichtung zu ihrer Herstellung |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5899617A (en) * | 1997-10-09 | 1999-05-04 | Chicony Electronics Co., Ltd. | Flexible component reinforcing mechanism |
US6492978B1 (en) * | 1998-05-29 | 2002-12-10 | Ncr Corporation | Keyscreen |
US6166662A (en) * | 1998-09-15 | 2000-12-26 | Chuang; Wen-Hao | Structure of key pad |
US5980135A (en) * | 1998-09-22 | 1999-11-09 | Acer Peripherals, Inc. | Keyboard with an optional metal support for strengthening its structure |
DE19846450A1 (de) * | 1998-10-08 | 2000-04-13 | Delphi Automotive Systems Gmbh | Schaltersystem |
DE19961728C1 (de) * | 1999-12-21 | 2001-08-30 | Kostal Leopold Gmbh & Co Kg | Elektrischer Schalter |
JP2002157940A (ja) * | 2000-11-17 | 2002-05-31 | Yazaki Corp | スイッチユニット |
US6781077B2 (en) | 2000-12-14 | 2004-08-24 | Think Outside, Inc. | Keyswitch and actuator structure |
US7132615B1 (en) * | 2005-04-21 | 2006-11-07 | Delphi Technologies, Inc. | Switchpad for a pushbutton switch assembly |
DE102009054506A1 (de) * | 2009-12-10 | 2011-06-16 | Zf Friedrichshafen Ag | Tastatur |
DE102018108660B3 (de) * | 2018-04-12 | 2019-10-17 | Preh Gmbh | Schalteranordnung mit Schaltmatte zur Bedienung eines Kraftfahrzeugbauteils |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT389398B (de) * | 1984-06-20 | 1989-11-27 | Sterner Franz | Kontaktmatte |
GB8719369D0 (en) * | 1987-08-15 | 1987-09-23 | Harboro Rubber Co Ltd | Manufacture of contact pad arrays |
US5438177A (en) * | 1992-05-06 | 1995-08-01 | Key Tronic Corporation | Two-layer membrane switch |
US5360955A (en) * | 1992-08-18 | 1994-11-01 | Key Tronic Corporation | Computer keyboard with cantilever switch design and improved PCB/switch membrane interface |
US5386091A (en) * | 1993-04-08 | 1995-01-31 | Compaq Computer Corporation | Low profile keyswitch |
KR970004399B1 (en) * | 1993-07-02 | 1997-03-27 | B T C Korea Co Ltd | Keyboard |
US5525979A (en) * | 1995-08-14 | 1996-06-11 | Lexmark International, Inc. | Low configuration keyboard |
-
1995
- 1995-08-10 DE DE19529492A patent/DE19529492A1/de not_active Withdrawn
-
1996
- 1996-07-05 DE DE59608483T patent/DE59608483D1/de not_active Expired - Lifetime
- 1996-07-05 EP EP96110921A patent/EP0758791B1/de not_active Expired - Lifetime
- 1996-08-05 US US08/691,819 patent/US5738450A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10221315A1 (de) * | 2002-05-07 | 2003-11-20 | Mayser Gmbh & Co | Elektrische Schaltanordnung und Verfahren sowie Vorrichtung zu ihrer Herstellung |
Also Published As
Publication number | Publication date |
---|---|
EP0758791A2 (de) | 1997-02-19 |
US5738450A (en) | 1998-04-14 |
EP0758791A3 (de) | 1997-09-17 |
DE19529492A1 (de) | 1997-02-13 |
DE59608483D1 (de) | 2002-01-31 |
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