EP0093080B1 - Clavier - Google Patents

Clavier Download PDF

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Publication number
EP0093080B1
EP0093080B1 EP83810150A EP83810150A EP0093080B1 EP 0093080 B1 EP0093080 B1 EP 0093080B1 EP 83810150 A EP83810150 A EP 83810150A EP 83810150 A EP83810150 A EP 83810150A EP 0093080 B1 EP0093080 B1 EP 0093080B1
Authority
EP
European Patent Office
Prior art keywords
printed circuit
circuit board
keyboard
keys
molded body
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
Application number
EP83810150A
Other languages
German (de)
English (en)
Other versions
EP0093080A1 (fr
Inventor
Werner Urs Frey
Johannes Rometsch
Karl Iseli
Peter Wild
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.)
Alcatel Lucent NV
Original Assignee
Standard Telephon and Radio AG
International Standard Electric Corp
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 Standard Telephon and Radio AG, International Standard Electric Corp filed Critical Standard Telephon and Radio AG
Priority to AT83810150T priority Critical patent/ATE15843T1/de
Publication of EP0093080A1 publication Critical patent/EP0093080A1/fr
Application granted granted Critical
Publication of EP0093080B1 publication Critical patent/EP0093080B1/fr
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/022—Plug
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/028—Facilitation of operation; Human engineering on planes with different or alterable inclination, e.g. convex plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/054—Mounting of key housings on same printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/01—Miscellaneous combined with other elements on the same substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/024—Miscellaneous with inductive switch

Definitions

  • the present invention relates to a keyboard in which key elements are mounted on a circuit board.
  • blind plates arranged in front of or behind the circuit board have been provided until today.
  • Blind plates in front of the printed circuit board are mostly metal plates, which have a shape-appropriate recess for each key element, into which the key element is inserted and usually held in place with resilient locking lugs (CH-A No. 586460).
  • CH-A No. 586460 resilient locking lugs
  • the electrical connections can be soldered into a circuit board behind the blind plate. It is clear that this blind plate is a relatively expensive element due to its many recesses.
  • Blind plates behind the printed circuit board if they are metallic, must be insulated from the latter or, if they are made of insulating material, have a sufficient thickness or ribs, with the disadvantage of high weight or great overall height.
  • FIG. 1 shows the layout of a keyboard with two keypads and Figure 2 shows a section through such a keyboard.
  • the keyboard of Fig. 1 has a cover 11 through which an alphanumeric keypad 12 and a field 13 with z. B. Function keys pass through. From the section in Fig. 2 it can be seen that the cover 21 rises from a support surface, not shown, at a small angle, continues after an offset at the same angle over the keypad, is bent twice after the keypad and runs back against the support surface.
  • Key elements 22 are mounted on a circuit board 23 below the cover 21.
  • a further printed circuit board 25 is connected via a plug 24, which carries the elements 26 of an evaluation electronics.
  • the plug 24 is advantageously soldered into the circuit board 25 and the circuit board 23 is connected by direct plugging.
  • the printed circuit board carrying the key elements 22 is supported by a molded foam body 27, which body fills the entire remaining cavity below the cover 11 and is fastened to it.
  • the molded foam body advantageously also forms the bottom of the keyboard.
  • the use of this molded foam body results in a considerable reduction in mechanical parts and therefore also a reduction in weight.
  • management keyboards i.e. H.
  • this reduction in weight as a result of the reduction in the impact energy leads to lighter designs which are nevertheless able to pass drop tests.
  • FIG. 3 corresponds approximately to the keyboard described in EP-A2 No. 0055220 (published on June 30, 1982), in which the key fields 31 - 33 are angled towards each other and have different inclinations in relation to a support surface in order to achieve an ergonomically better posture, in which the hands have to be angled and screwed in less than is necessary with a conventional one-piece or flat keyboard.
  • the division of the electrical circuits into two printed circuit boards 23 and 25 connected by the plug 24 has the advantage that in the case of a transformer keyboard for the relatively large printed circuit board, which contains the primary and secondary windings of the key transformers and carries the key elements, an inexpensive, double-sided cladding Printed circuit board can be used, which no connections between the two facing sides, i. H. no through plating and no soldering process required. The absence of solder joints on this printed circuit board allows them to be placed directly on the molded foam body, at best with the interposition of an insulating film.
  • the evaluation electronics on the other hand, require through plating, but can be accommodated on the relatively small circuit board 25. Although an additional plug is required to connect the two circuit boards, the three elements together are cheaper than a single larger circuit board with through-plating.
  • This division also makes it possible to make the keyboard as small as possible in terms of the desired key pitch, since in this way the evaluation electronics do not require any space in the depth or width of the keyboard, but are accommodated where the space is required because of the ergonomically necessary Inclination of the keyboard is present anyway.
  • the division also results in a simpler shape of the molded foam body and allows in the event of a defect, simply replace the evaluation electronics.

Landscapes

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

Claims (5)

1. Clavier dont les touches (22) sont montées sur une plaque de circuit imprimé (23), caractérisé en ce que, en dessous de la plaque de circuit imprimé, est disposé un corps moulé en mousse de matière plastique (27) qui, sans autre élément de support, supporte la plaque de circuit imprimé sur pratiquement la totalité de sa surface contre toute flexion due à l'actionnement des touches.
2. Clavier selon la revendication 1, caractérisé en ce qu'une ou plusieurs plaques de circuit imprimé supportant les touches (22) sont insérées avec le bord ou le couvercle correspondant (21) dans des cavités d'un corps (27) en mousse de matière plastique entourant l'ensemble du clavier.
3. Clavier selon l'une des revendications 1 ou 2, comportant des touches sans contact dont le fonctionnement utilise un noyau ferromagnétique en forme de plongeur inséré dans un transformateur de touche correspondant monté sur la plaque de circuit imprimé, caractérisé en ce que les touches (22) sont montées sur au moins une première plaque de circuit imprimé (23) agencée sous un couvercle (21), en ce qu'un circuit d'exploitation (26) est agencé sur une seconde plaque de circuit imprimé (25) reliée à la première plaque par un connecteur (24), et en ce que la première plaque de circuit imprimé (23) sur laquelle sont montées les touches est supportée sur la totalité de sa surface par le corps moulé en mousse de matière plastique (27).
4. Clavier selon la revendication 3, caractérisé en ce que la seconde plaque de circuit imprimé (25) est agencée perpendiculairement à la première plaque de circuit imprimé (23), en ce que le connecteur (24) est soudé sur la seconde plaque de circuit imprimé (25), et en ce que la première plaque de circuit imprimé (23) comporte des conducteurs imprimés permettant un branchement direct.
5. Clavier selon la revendication 3, caractérisé en ce que les touches (22) sont montées sur au moins deux premières plaques de circuit imprimé qui sont inclinées l'une par rapport à l'autre et par rapport à une surface support du clavier de telle façon qu'il en résulte une torsion et une flexion réduites du poignet de l'utilisateur en comparaison avec un clavier en une seule pièce (fig. 3).
EP83810150A 1982-04-15 1983-04-13 Clavier Expired EP0093080B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83810150T ATE15843T1 (de) 1982-04-15 1983-04-13 Tastatur.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2283/82 1982-04-15
CH228382 1982-04-15

Publications (2)

Publication Number Publication Date
EP0093080A1 EP0093080A1 (fr) 1983-11-02
EP0093080B1 true EP0093080B1 (fr) 1985-09-25

Family

ID=4230149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810150A Expired EP0093080B1 (fr) 1982-04-15 1983-04-13 Clavier

Country Status (5)

Country Link
EP (1) EP0093080B1 (fr)
JP (1) JPS5916227A (fr)
AT (1) ATE15843T1 (fr)
CA (1) CA1211531A (fr)
DE (1) DE3360872D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD310680S (en) 1987-09-28 1990-09-18 Proizvodnja in prodaja igrac, pisal, kovinskih in plasticnih izdelkov "Mehano", p.o. Electronic typewriter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614120A1 (fr) * 1987-04-17 1988-10-21 C P Clare Electronique Clavier electronique
DE4004116C2 (de) * 1990-02-10 1997-08-21 Leybold Ag Verfahren zum Beschichten eines Kunststoffsubstrats, vorzugsweise eines Polymethylmethacrylat-Substrats, mit Metallen sowie Vorrichtung zur Durchführung des Verfahrens
JP3437958B2 (ja) * 2001-01-23 2003-08-18 株式会社エルコム キーボード装置およびその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA999374A (en) * 1973-08-15 1976-11-02 Illinois Tool Works Inc. Magnetic key switch having a removable support assembly
JPS57125069A (en) * 1980-12-19 1982-08-04 Int Standard Electric Corp Key board device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD310680S (en) 1987-09-28 1990-09-18 Proizvodnja in prodaja igrac, pisal, kovinskih in plasticnih izdelkov "Mehano", p.o. Electronic typewriter

Also Published As

Publication number Publication date
ATE15843T1 (de) 1985-10-15
CA1211531A (fr) 1986-09-16
DE3360872D1 (en) 1985-10-31
JPS5916227A (ja) 1984-01-27
EP0093080A1 (fr) 1983-11-02

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