EP0401544A2 - Touche pour un clavier - Google Patents

Touche pour un clavier Download PDF

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Publication number
EP0401544A2
EP0401544A2 EP90108967A EP90108967A EP0401544A2 EP 0401544 A2 EP0401544 A2 EP 0401544A2 EP 90108967 A EP90108967 A EP 90108967A EP 90108967 A EP90108967 A EP 90108967A EP 0401544 A2 EP0401544 A2 EP 0401544A2
Authority
EP
European Patent Office
Prior art keywords
key
base
keyboard
key base
head
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
EP90108967A
Other languages
German (de)
English (en)
Other versions
EP0401544B1 (fr
EP0401544A3 (fr
Inventor
Oskar Zumkeller
Paul Blaser
Hubert Ing. Grad. Bonath
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.)
Digital Kienzle Computersysteme GmbH and Co KG
Original Assignee
Digital Kienzle Computersysteme GmbH and Co KG
Mannesmann Kienzle 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 Digital Kienzle Computersysteme GmbH and Co KG, Mannesmann Kienzle GmbH filed Critical Digital Kienzle Computersysteme GmbH and Co KG
Publication of EP0401544A2 publication Critical patent/EP0401544A2/fr
Publication of EP0401544A3 publication Critical patent/EP0401544A3/fr
Application granted granted Critical
Publication of EP0401544B1 publication Critical patent/EP0401544B1/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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • 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
    • H01H2221/062—Damping vibrations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/024—Miscellaneous with inductive switch

Definitions

  • the invention relates to a key for a keyboard with a key base that can be fastened to a printed circuit board of the keyboard, a key head that is guided in a spring manner in the key base, and stops that limit the key travel.
  • Keyboards in particular those which represent autonomous units, so to speak auxiliary components of data processing systems, are expected to be inexpensive, function without a doubt and with a high level of security, can be integrated into existing device configurations and are designed to be user-friendly.
  • a decisive factor in this connection is the level of the operating noise, which, which would be desirable, cannot be reduced by rationalization measures, but rather increases.
  • the reason for this is in particular the fact that the keys of such a keyboard open immediately are attached to a circuit board, which forms a resonance body in connection with the keyboard housing.
  • the keys are only formed in two parts, ie the bell-shaped key head, which strikes the key base when the key is depressed, has no damping effect, but rather represents a resonance body itself.
  • the object of the present invention was to find an effective sound attenuation for keyboards of the type mentioned, which is easy to implement in terms of production technology.
  • damping means are formed on at least one of the relatively movable key parts in such a way that they are associated with the actuating stop which is effective when the key head is depressed and protrude into the path of movement of the key head.
  • damping means are formed directly on one of the action elements (key head or key base) that are moved against each other when the key is pressed, and thus no additional components or assembly operations required are. It is also worth mentioning that the damping and stop means with an appropriate structural design perform an alignment function on the key head by intercepting the key head "over a large area” and offering a large stop surface and thus counteracting the wear of the guide means.
  • the keyboard 1 shown in FIG. 1, for example, is a so-called inductive keyboard, i. H. the signals are generated inductively when the buttons are pressed.
  • the keyboard 1 consists of a trough-shaped base part 2 and a front frame 3, which longitudinal and transverse webs - one is designated by 4 - are assigned, by means of which various keypads, depending on use, for example, a function keypad , a numeric and a letter keypad, can be delimited.
  • the base part 2 and the front frame 3 are connected to one another by a plurality of alignment and locking elements, of which a locking hook formed on the base part is designated by 5 in FIG.
  • the circuit board 6 is the carrier of the keys 9, the respective plate-shaped key base 10 being latched to the circuit board 6 by means of suitable latching hooks 11 formed on the key base 10.
  • the locking hooks 11 engage behind, as FIGURES 4 and 5 show, the printed circuit board 6.
  • a suitable anti-rotation device is provided.
  • a pin 12 (FIG. 4) formed on the key base 10 engages in an opening 13 in the printed circuit board 6.
  • FIGURE 2 shows a section of the circuit board 6 in which each key 9 is assigned three holes 13, 14 and 15. 16 with intersecting conductor tracks, which are attached to the circuit board 6 on both sides and which, together with the bore 14, form an induction coil.
  • a hole 17 formed in the key base 10 is, when the key base 10 is mounted on the printed circuit board 6, aligned with the bore 14 and serves for the passage of a ferrite core 19 fastened in the key top 18.
  • FIG. 3 further shows an opening 20, the geometric axis of which is also shown the axis of the pin 12 coincides.
  • the opening 20 serves as a guide for a finger 21 formed on the key head 18 and is provided together with the finger 21 as an anti-rotation device for the key head 18.
  • guide sleeve 22 With 22 a molded on the key base 10 guide sleeve is designated, 23 and 24 are 10 saved, resilient arms in the key base.
  • the recesses in the key base are labeled 25 and 26.
  • the guide sleeve 22 serves to guide the key head 18 by means of a shaft 27 formed on the key head 18 and to hold a compression spring 28 which serves to reset the key head 18 after a key has been pressed.
  • the stop position of the key head 18 when the key 9 is not actuated becomes what is not shown. but is also not essential to the invention, of at least one nose formed on the shaft 27, which interacts with a free countersink fitted in the guide sleeve 22, certainly.
  • the key head 18 is struck either by a collar 29 formed on the key head 18 cooperating with the guide sleeve 22 or by the corner regions of the deep-drawn walls of the key head 18 - one wall being designated 30 - on corner regions 31, 32, 33 formed on the key base 10 and 34 hit.
  • the keystroke is distributed over a larger area, and on the other hand, the ability of the key head 18 to vibrate is largely reduced.
  • the guidance of the key head 18 is relieved by aligning the key head 18 and canceling the play-related tilting moment, which in turn reduces wear.
  • the intended damping takes effect, i. H. the walls 30 of the key head 18 come into operative connection with the resilient arms 23 and 24 formed on the key base 10, during the deformation of which a part of the actuation energy is consumed over a stroke s before the final stop position is reached.
  • resilient arms for example rotationally symmetrical, can be formed on all four sides of the key base.
  • FIGURES 7 and 8 Another variant of the key base 10 is shown in FIGURES 7 and 8, with resilient arms 36, 37, 38 and 39 being formed on two sides of a key base 35 in pairs by injection molding.
  • the arms 36, 37, 38 and 39 are formed such that they each with their free, resilient end are directed against raised edge regions 40 and 41 of the key base 35.
  • a "large-area” interception of the key head 18 is achieved and it is avoided that the key head strikes the end stop at a point. This measure further reduces the noise when the keys are struck.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
EP19900108967 1989-06-03 1990-05-12 Touche pour un clavier Expired - Lifetime EP0401544B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893918229 DE3918229C1 (fr) 1989-06-03 1989-06-03
DE3918229 1989-06-03

Publications (3)

Publication Number Publication Date
EP0401544A2 true EP0401544A2 (fr) 1990-12-12
EP0401544A3 EP0401544A3 (fr) 1992-02-12
EP0401544B1 EP0401544B1 (fr) 1995-04-19

Family

ID=6382054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900108967 Expired - Lifetime EP0401544B1 (fr) 1989-06-03 1990-05-12 Touche pour un clavier

Country Status (2)

Country Link
EP (1) EP0401544B1 (fr)
DE (1) DE3918229C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110646A1 (de) * 2001-03-06 2002-09-12 Valeo Schalter & Sensoren Gmbh Schalter, insbesondere Schalter für Kraftfahrzeuge
WO2025132274A1 (fr) * 2023-12-18 2025-06-26 Exefix Limited Dispositif de fixation de répartition de charge

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478991A3 (en) * 1990-10-01 1992-10-21 Siemens Aktiengesellschaft Holder for keys of a keyboard for electrical apparatus
CZ288964B6 (cs) 1995-06-13 2001-10-17 Mec A/S Elektrický spínač a způsob jeho výroby
DE19757907A1 (de) * 1997-12-24 1999-07-01 Marquardt Gmbh Elektrischer Schalter
DE102012019718B4 (de) 2012-10-08 2015-03-05 Kehrel AG Multifunktions-Bedienvorrichtung zur Bedienung eines Kraftfahrzeugs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729790A1 (de) * 1977-07-01 1979-01-18 Licentia Gmbh Schaltteil mit einem als daempfer wirkenden anschlag
DE8015685U1 (de) * 1980-06-13 1980-10-09 Philips Patentverwaltung Gmbh, 2000 Hamburg Drucktaste
JPS6075929U (ja) * 1983-10-31 1985-05-28 株式会社ジエルコ 押しボタンスイツチ
DE8705193U1 (de) * 1987-04-07 1987-05-27 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen Taste für eine Werteingabetastatur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10110646A1 (de) * 2001-03-06 2002-09-12 Valeo Schalter & Sensoren Gmbh Schalter, insbesondere Schalter für Kraftfahrzeuge
WO2025132274A1 (fr) * 2023-12-18 2025-06-26 Exefix Limited Dispositif de fixation de répartition de charge

Also Published As

Publication number Publication date
DE3918229C1 (fr) 1990-07-26
EP0401544B1 (fr) 1995-04-19
EP0401544A3 (fr) 1992-02-12

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