EP0123818A1 - Bouton poussoir de clavier, particulièrement pour appareils téléphoniques - Google Patents

Bouton poussoir de clavier, particulièrement pour appareils téléphoniques Download PDF

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Publication number
EP0123818A1
EP0123818A1 EP84102076A EP84102076A EP0123818A1 EP 0123818 A1 EP0123818 A1 EP 0123818A1 EP 84102076 A EP84102076 A EP 84102076A EP 84102076 A EP84102076 A EP 84102076A EP 0123818 A1 EP0123818 A1 EP 0123818A1
Authority
EP
European Patent Office
Prior art keywords
slide
pressure point
key
keyboard key
point
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.)
Withdrawn
Application number
EP84102076A
Other languages
German (de)
English (en)
Inventor
Hans-Dieter Ing. Pietsch (Grad.)
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.)
DR. EUGEN SASSE GMBH BAUELEMENTE FUER DIE ELEKTRON
Original Assignee
Dr Eugen Sasse Bauelemente fur Die Elektronik 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 Dr Eugen Sasse Bauelemente fur Die Elektronik GmbH filed Critical Dr Eugen Sasse Bauelemente fur Die Elektronik GmbH
Publication of EP0123818A1 publication Critical patent/EP0123818A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02Details
    • H01H15/06Movable parts; Contacts mounted thereon
    • H01H15/10Operating parts
    • H01H15/102Operating parts comprising cam devices

Definitions

  • the invention relates to a keyboard key, in particular for telephone key sets, with a slide key that is biased in the rest position against its direction of movement and that contacts at least one set of switch springs in the working position.
  • Such keyboard keys usually work on a printed circuit board with connections. Certain switching characteristics are carried out according to a known construction by means of a rubber mat, according to another known construction by means of spring contact keys, but mostly for other applications than telephone key sets, in the form of membrane keyboards.
  • the printed circuit board and switching foil are separated by an insulating foil, which has cutouts in the area of the switching points and contact areas. The contact surfaces of the switching film are opposite the switching points on the circuit board.
  • the switching point may lie after the pressure point, as required, for example, by the Swedish Post.
  • a solution for a keyboard key of the type mentioned at the outset is now surprisingly proposed, which is distinguished by a purely mechanical device which forcibly measures the tactile pressure point relative to the switching point.
  • the advantage of such a device is that the so-called tactile pressure point becomes independent of the electrical switching point, in such a way that the switching point can be before or after the pressure point during the key stroke.
  • This device preferably consists of mechanical elements which are designed separately on the slide button, once to bring about the tactile pressure point, once to bring about the switching point.
  • the device for bringing about the pressure point is formed from a suspension fork provided on the housing and a slide nose formed on the slide button. It is advantageous if the clear width of the suspension fork in the idle state is significantly less than the corresponding width of the slide nose.
  • the most elegant solution is when the device for generating the circuit, which is designed as a wedge-shaped slide lug, is offset higher by an amount dependent on the stroke difference than the slide lug entering the suspension fork for the pressure point.
  • the strength of the key pressure points can preferably be changed by changing the width from the slide nose to the width of the suspension fork and the length of the suspension fork.
  • the suspension fork expediently has warts on its fork legs after overcoming the pressure point on axially parallel surfaces of the slide nose.
  • keyboard keys are significantly increased compared to working against rubber mats, compared to previous spring contacts for the first time a defined pressure point with a defined separation from the switching point is brought about and thus brings about the desired switching characteristics.
  • a keyboard key 1 (ie a slide component) comprises a slide nose 10 on one side and a slide nose 12 on the opposite rear side.
  • Sliding blocks 18, which are actuated by the slide 12 are attached in the frame (not shown) that work against switching springs 24, 26 on both sides.
  • FIG. 2a shows the design of the first slide side for generating the pressure point due to the retraction of the slide lug 10 into the spring fork 14 in order to achieve the desired switching characteristic (FIG. 2b).
  • the slide lug 12 which is optionally provided in one piece on the slide button is formed parallel to the actuation direction of the slide button 1 and, in contrast, has parallel cheeks with a dimension y. At the top, the slider key merges into the key top area, at the bottom it is rounded.
  • the associated suspension fork 14 sits in a housing to be described. Their clear width or their dimension x in the rest state of the legs 16 (dimension on the warts 20) is significantly smaller than the dimension y of the slide. After expansion by retracting the slide (dashed position), the spring legs 16 give way due to the spreading, (Contact of the warts on the parallel surfaces of the slide nose) apart.
  • the dimension in the fork base (clear width), on the other hand, is much larger than the outer dimension of the slide nose, so that once it has passed between the warts, it can be easily pushed through.
  • a wedge-shaped slide nose 40 is realized on the slide key, which is also flush with the top of the key top (see FIG. 1) and which is connected to this slide key, for example via a web (FIG. 1), and extends downwards .
  • a strongly conical wall (at 42) adjoins this slide button parallel walls.
  • the slide nose is preferably symmetrical. The arrow indicates the direction of movement.
  • Fig. 5 illustrates how, for example, fully defined switching times and printing times can be separated from one another.
  • the slide lug 10 is against the wedge-shaped slide lug 12 for generating the pressure point the switching point generation offset by the dimension Z higher, ie attached to the slider 1 by this piece
  • the point in time when which function has to be carried out can be changed from pressure point to switching point, wherein the pressure point can of course be before or after the switching point, but in particular of course the switching point lies behind the pressure point.
  • the switching range lies clearly before the pressure point, according to FIG. 7, due to the engagement of slide lug 10 in the suspension fork 14, clearly after the pressure point.
  • the actuation force drops practically steeply after suddenly overcoming the resistance (after the pressure point peak), only to increase again until it stops due to the spring resistance (end of curve - steep increase in actuation force without further key stroke).
  • Fig. 8 shows an installation example, wherein an outside button 2 acts on the slide button 1. Also shown is the spring 4, which is designed as a compression spring and resets the slide button after being released.
  • the slide button 1 described above is guided via the outer button 2 on the one hand in an outer housing 3, on the other hand (below) in an inner housing from which side wall plates 5 can be seen.
  • the switching springs 24 and 26 indicated in FIG. 1 are mounted in the outer housing.
  • the position of the slide tabs 10 and 12 can be clearly seen; one can see how the rounded slide nose 10 wedges into the suspension fork 14 Shaped slide nose 40 in the sliding blocks 44, inserts and thus makes contact between the springs 24 and 26 and thus to the contact sets 8.

Landscapes

  • Push-Button Switches (AREA)
EP84102076A 1983-04-05 1984-02-28 Bouton poussoir de clavier, particulièrement pour appareils téléphoniques Withdrawn EP0123818A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3312217 1983-04-05
DE19833312217 DE3312217A1 (de) 1983-04-05 1983-04-05 Tastaturtaste, insbesondere fuer fernsprechtastenapparate

Publications (1)

Publication Number Publication Date
EP0123818A1 true EP0123818A1 (fr) 1984-11-07

Family

ID=6195496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102076A Withdrawn EP0123818A1 (fr) 1983-04-05 1984-02-28 Bouton poussoir de clavier, particulièrement pour appareils téléphoniques

Country Status (2)

Country Link
EP (1) EP0123818A1 (fr)
DE (2) DE3312217A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330576C1 (de) * 1993-09-09 1994-11-10 Preh Elektro Feinmechanik Tastschalter
WO2000031949A1 (fr) * 1998-11-26 2000-06-02 Koninklijke Philips Electronics N.V. Dispositif constitue d'un boitier, d'une carte a circuit imprime integre et de touches dans une paroi laterale du boitier

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10341750A1 (de) * 2003-09-08 2005-03-31 Leopold Kostal Gmbh & Co Kg Anordnung zum Erzeugen einer Haptik eines manuell linearbewegten Stellgliedes

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1294455A (fr) * 1960-07-06 1962-05-26 Telephone Mfg Co Ltd Mécanisme à mouvement de va-et-vient, en particulier pour interrupteurs à boutonpoussoir
GB1187468A (en) * 1967-11-15 1970-04-08 Ericsson Telephones Ltd Push-Button Assembly
FR2197218A1 (fr) * 1972-08-23 1974-03-22 Siemens Ag
FR2246907A1 (fr) * 1973-10-04 1975-05-02 Illinois Tool Works
WO1981000763A1 (fr) * 1979-09-14 1981-03-19 Burroughs Corp Clavier photo-optique donnant une sensation de toucher
EP0043618A1 (fr) * 1980-07-08 1982-01-13 Philips Electronics Uk Limited Interrupteur à bouton poussoir
GB2088131A (en) * 1980-11-21 1982-06-03 Keyboard The Co Keyboard switch actuators

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1145689B (de) * 1961-08-04 1963-03-21 Eugen Sasse K G Dr Kleindrucktaste mit einsteckbarem Blattfeder-Kontaktsatz, insbesondere fuer Fernmeldezwecke
DE2241346C3 (de) * 1972-08-23 1975-09-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Tastenschalter, insbesondere für Tastaturen in Schreibmaschinen und ähnlichen Maschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1294455A (fr) * 1960-07-06 1962-05-26 Telephone Mfg Co Ltd Mécanisme à mouvement de va-et-vient, en particulier pour interrupteurs à boutonpoussoir
GB1187468A (en) * 1967-11-15 1970-04-08 Ericsson Telephones Ltd Push-Button Assembly
FR2197218A1 (fr) * 1972-08-23 1974-03-22 Siemens Ag
FR2246907A1 (fr) * 1973-10-04 1975-05-02 Illinois Tool Works
WO1981000763A1 (fr) * 1979-09-14 1981-03-19 Burroughs Corp Clavier photo-optique donnant une sensation de toucher
EP0043618A1 (fr) * 1980-07-08 1982-01-13 Philips Electronics Uk Limited Interrupteur à bouton poussoir
GB2088131A (en) * 1980-11-21 1982-06-03 Keyboard The Co Keyboard switch actuators

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330576C1 (de) * 1993-09-09 1994-11-10 Preh Elektro Feinmechanik Tastschalter
US5545864A (en) * 1993-09-09 1996-08-13 Preh-Werke Gmbh & Co. Kg Push switch
WO2000031949A1 (fr) * 1998-11-26 2000-06-02 Koninklijke Philips Electronics N.V. Dispositif constitue d'un boitier, d'une carte a circuit imprime integre et de touches dans une paroi laterale du boitier

Also Published As

Publication number Publication date
DE8309913U1 (de) 1985-03-28
DE3312217A1 (de) 1984-10-11

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE GB LI SE

17P Request for examination filed

Effective date: 19841114

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DR. EUGEN SASSE GMBH BAUELEMENTE FUER DIE ELEKTRON

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870106

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PIETSCH, HANS-DIETER, ING. (GRAD.)