EP0148437B1 - Tastenkappe für eine in einem Gehäuse angeordnete Tastatur - Google Patents

Tastenkappe für eine in einem Gehäuse angeordnete Tastatur Download PDF

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Publication number
EP0148437B1
EP0148437B1 EP84115189A EP84115189A EP0148437B1 EP 0148437 B1 EP0148437 B1 EP 0148437B1 EP 84115189 A EP84115189 A EP 84115189A EP 84115189 A EP84115189 A EP 84115189A EP 0148437 B1 EP0148437 B1 EP 0148437B1
Authority
EP
European Patent Office
Prior art keywords
housing
synthetic resin
key cap
resin part
opening
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
EP84115189A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0148437A1 (de
Inventor
Reinhold Kiesewetter
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT84115189T priority Critical patent/ATE32802T1/de
Publication of EP0148437A1 publication Critical patent/EP0148437A1/de
Application granted granted Critical
Publication of EP0148437B1 publication Critical patent/EP0148437B1/de
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
    • H01H13/50—Switches 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
    • H01H13/52—Switches 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 the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
    • 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
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/052—Phosphorescence
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H01H2229/046—Multi-colour or double shot injection moulding

Definitions

  • the invention relates to a key cap for a keyboard arranged in a device of the electrical communication technology, in particular the operating device of a telephone device, which is inserted into a housing opening of the device and can be pressed against a keyboard arranged inside the housing to actuate it and arranged laterally, has elongated, prestressed spring elements which are supported on a stop surface in the housing.
  • dialing devices which have so far mostly been provided with a rotating dial.
  • dialing devices there are also devices of this type, and in particular car telephone devices, which have operating devices with dialing keyboards, by means of which the dialing process is made considerably easier.
  • the keyboards are provided with numbers or symbols according to their function, most of which are printed.
  • the operating device of a telephone device can either be a separate device with an associated handset, as is generally the case, or a handset in which the dialing and display units are integrated. In both cases keyboards are required, which are actuated by means of key caps inserted into the housing openings.
  • a pressure switch with a cap-shaped push button which essentially corresponds to the key cap described at the beginning.
  • several elastic spring tongues are evenly distributed on the circumference as return springs, each of which protrudes beyond the lower edge of the pushbutton in the actuation direction and is supported downwards on the switch housing.
  • the spring tongues spring back into a recess of the push button when the push button is pressed.
  • the invention has for its object to provide a stable and reliable guide for such key caps in the housing and to ensure good recognition or readability in different lighting conditions for numbers and symbols.
  • the key cap which can be inserted into the housing opening with lateral play, has a downwardly open, half-shell-shaped plastic part of rectangular shape and has a correspondingly configured pin on at least one side running parallel to the housing opening at an acute angle inclined towards the housing, the half-shell-shaped plastic part laterally projecting, prestressed spring element, which is supported on a stop surface in the housing and with the upper side of the contact surfaces formed by the spring elements, enlarged in diameter compared to the housing opening, is laterally protruding on the housing wall, and that the key cap is stepped at the top and is provided in the middle, raised part with a recess corresponding to the identification with a number or a symbol, or the part made of a translucent plastic exist and are connected in a light-conducting manner via a translucent plastic part filling the interior of the opaque half-shell-shaped plastic part to the peg attached to this translucent plastic part.
  • the keycap 1 has a downwardly open, half-shell-shaped plastic part of rectangular shape, on the longitudinal and transverse sides of which spring elements 2 are attached, preferably molded on. These spring elements 2 are fastened to the corners of the key cap 1 and run at an acute angle against the horizontal plane downwards, ie towards the housing 6, into which they are inserted.
  • the key cap 1 is stepped at the top, the middle, raised part 3 being provided with a recess corresponding to the number or symbol with which the key cap 1 is to be identified.
  • the number or symbol consists of a translucent plastic. They are connected in a light-conducting manner to a pin 5 attached to the plastic part 4 via a plastic part 4, which fills the interior of the key cap made of an opaque plastic with a firm fit.
  • a light-collecting, fluorescent colored plastic is used, which combines the advantageous properties that it is easily legible both during the day and sufficiently illuminated from inside and thus legible at night.
  • Fig. 5 shows the key cap 1 described above in the installed state.
  • Several keycaps are expediently arranged in a grid and provided with the symbols corresponding to their function.
  • the associated buttons 8 are mounted in the same grid, for example on a printed circuit board 10 and soldered in the example shown via solder connections 9.
  • the key cap 1 is inserted into the opening of a housing 6.
  • a lateral play is provided to prevent the key cap 1 from jamming.
  • the spring elements 2 are supported on a stop surface which is formed by a light guide 7 which has a correspondingly designed bore for receiving the pin 5 of the key cap 1.
  • the light guide 7 is used to supply the light to the numbers or symbols in the key cap 1.
  • the key cap 1 is pressed with its pin 5 onto the key 8 and is reset by the four spring elements 2 attached laterally to the key cap 1 in the exemplary embodiment.
  • These spring elements 2 which are made of a correspondingly elastic plastic, also ensure that the keycaps do not rattle in the housing and an undesirable noise occurs when driving.
  • the integrated spring elements simplify assembly considerably. The elimination of a separate spring not only simplifies assembly, but also reduces costs.

Landscapes

  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Casings For Electric Apparatus (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
EP84115189A 1983-12-22 1984-12-12 Tastenkappe für eine in einem Gehäuse angeordnete Tastatur Expired EP0148437B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115189T ATE32802T1 (de) 1983-12-22 1984-12-12 Tastenkappe fuer eine in einem gehaeuse angeordnete tastatur.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833346485 DE3346485A1 (de) 1983-12-22 1983-12-22 Tastenkappe fuer eine in einem gehaeuse angeordnete tastatur
DE3346485 1983-12-22

Publications (2)

Publication Number Publication Date
EP0148437A1 EP0148437A1 (de) 1985-07-17
EP0148437B1 true EP0148437B1 (de) 1988-03-02

Family

ID=6217749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115189A Expired EP0148437B1 (de) 1983-12-22 1984-12-12 Tastenkappe für eine in einem Gehäuse angeordnete Tastatur

Country Status (7)

Country Link
EP (1) EP0148437B1 (fi)
AT (1) ATE32802T1 (fi)
DE (2) DE3346485A1 (fi)
DK (1) DK160381C (fi)
ES (1) ES295022Y (fi)
FI (1) FI80360C (fi)
NO (1) NO165317C (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512386A1 (de) * 1985-04-04 1986-10-09 Siemens AG, 1000 Berlin und 8000 München Tastenkappe fuer eine in einem gehaeuse angeordnete tastatur
EP0231007A3 (de) * 1986-01-31 1989-11-15 Siemens Aktiengesellschaft Drucktaste
JP2768030B2 (ja) * 1991-02-21 1998-06-25 日本電気株式会社 フラットキーボードスイッチ
FR2683183B1 (fr) * 1991-10-31 1995-02-03 Sextant Avionique Procede pour former un motif peint sur un objet realise dans un materiau non adherent.
FI110044B (fi) 2000-06-30 2002-11-15 Nokia Corp Elektroniikkalaitteen kuoriosan rakenne
JP2002093270A (ja) * 2000-09-19 2002-03-29 Nec Corp 照光部構造
JP2007141662A (ja) * 2005-11-18 2007-06-07 Polymatech Co Ltd キーシート
US9346201B2 (en) * 2014-09-18 2016-05-24 Ford Global Technologies, Llc Plastic part with reduced read-through

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144643A (en) * 1960-12-10 1964-08-11 Gasaccumulator Svenska Ab Push-button illuminating device
DE1665975B2 (de) * 1967-06-23 1972-05-04 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim Elektrischer schalter mit beleuchtung, insbesondere fuer kraftfahrzeuge
US3982081A (en) * 1974-09-04 1976-09-21 Amp Incorporated Keyboard assembly with overlapped flexible printed circuit cable switch
JPS5168726A (fi) * 1974-12-12 1976-06-14 Hosiden Electronics Co
FR2395546A2 (fr) * 1977-06-22 1979-01-19 Serras Paulet Edouard Clavier de commande alphanumerique a touches enfoncables pour machine electrique ou electronique
US4124879A (en) * 1977-05-20 1978-11-07 Motorola, Inc. Illumination apparatus for use in an illuminatable pushbutton keyset and the like
FR2415335B1 (fr) * 1978-01-23 1985-06-07 Graniou Louis Electr Touche de commande opto-electronique, a signalisation lumineuse incorporee
DE2817362A1 (de) * 1978-04-20 1979-10-31 Siemens Ag Waehltastatur
FR2438294B2 (fr) * 1978-10-05 1986-07-18 Graniou Louis Electr Touche de commande opto-electronique a signalisation lumineuse incorporee
DE3039732A1 (de) * 1980-10-21 1982-04-29 Siemens Ag Waehltastatur fuer fernsprechgeraete
DE8109166U1 (de) * 1981-03-28 1982-09-16 Robert Bosch Gmbh, 7000 Stuttgart Druckschalter mit einer kappenförmigen Drucktaste
US4365120A (en) * 1981-04-13 1982-12-21 Kb Denver, Inc. Illuminated keyboard

Also Published As

Publication number Publication date
DE3346485A1 (de) 1985-07-04
FI80360C (fi) 1990-05-10
NO165317B (no) 1990-10-15
FI845093L (fi) 1985-06-23
ES295022U (es) 1986-11-01
EP0148437A1 (de) 1985-07-17
NO845074L (no) 1985-06-24
ATE32802T1 (de) 1988-03-15
DK160381C (da) 1991-08-12
DE3469636D1 (en) 1988-04-07
ES295022Y (es) 1987-07-16
FI80360B (fi) 1990-01-31
FI845093A0 (fi) 1984-12-21
DK613484D0 (da) 1984-12-20
DK160381B (da) 1991-03-04
NO165317C (no) 1991-01-23
DK613484A (da) 1985-06-23

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