EP0544124B1 - Drucktastenfeld aus Kunststoff insbesondere für Kommunikationsendgeräte - Google Patents

Drucktastenfeld aus Kunststoff insbesondere für Kommunikationsendgeräte Download PDF

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Publication number
EP0544124B1
EP0544124B1 EP92118755A EP92118755A EP0544124B1 EP 0544124 B1 EP0544124 B1 EP 0544124B1 EP 92118755 A EP92118755 A EP 92118755A EP 92118755 A EP92118755 A EP 92118755A EP 0544124 B1 EP0544124 B1 EP 0544124B1
Authority
EP
European Patent Office
Prior art keywords
spring arms
push
button
keys
case
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
Application number
EP92118755A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0544124A3 (en
EP0544124A2 (de
Inventor
Harald Dipl.-Ing. Bader
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
Publication of EP0544124A2 publication Critical patent/EP0544124A2/de
Publication of EP0544124A3 publication Critical patent/EP0544124A3/de
Application granted granted Critical
Publication of EP0544124B1 publication Critical patent/EP0544124B1/de
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
    • 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
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/064—Limitation of actuating pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/062—Maintenance or repair facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/002—Key modules joined to form button rows
    • H01H2233/004—One molded part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/002—Key modules joined to form button rows
    • H01H2233/004—One molded part
    • H01H2233/006—Separating individual keys after mounting

Definitions

  • the invention relates to a pushbutton panel made of plastic, in particular for communication terminals, with a plurality of interconnected pushbuttons, in which resilient spring arms are formed on two opposite lower corners of each pushbutton of a row of buttons and parallel to the plane of the side surfaces, and each with all free ends of the spring arms connecting webs lying transversely to the longitudinal direction of the spring arms are connected.
  • Such a keypad is known for example from GB-A-2 072 584.
  • the use of complete pushbuttons significantly simplifies assembly compared to assembly with individual buttons.
  • a disadvantage of the known push button fields is that if a part of the push button field breaks in the installed state, functions of individual buttons are lost, which results in an exchange of the entire push button field.
  • the object of the present invention is to provide a pushbutton field of the type mentioned, in which the function of the individual keys is maintained in the event of a break in the installed state.
  • the spring arms are formed on two diagonally opposite lower corners and each run obliquely downwards, that directly adjacent spring arms of two push buttons are directed obliquely downwards in the opposite direction, the Spring arms of the pushbuttons of adjacent rows are each arranged so that the upper and lower ends of the spring arms are directly opposite each other, and that in each case all lower ends of the spring arms are connected via tapering to the connecting webs lying transversely to the longitudinal direction of the spring arms.
  • the individual keys are connected to one another via the connecting webs in such a way that they form a coherent, easy-to-assemble pushbutton field. Due to the tapering provided according to the invention when connecting the lower ends of the spring arms to the connecting webs, a predetermined breaking point is created, at which a break occurs when the push buttons are overused. Due to the construction according to the invention, the function of the single key is not impaired by this break, since the function of the spring arm is fully retained. In the assembled state, a preload is achieved via the spring arms, which prevents rattling noises of the individual pushbuttons even under unfavorable operating conditions. Furthermore, the spring arms automatically reset the key bodies independently of built-in switching elements.
  • An embodiment of the invention is characterized in that the spring arms run parallel to the plane of the end faces of the push buttons.
  • This embodiment represents an alternative arrangement of the spring arms to the arrangement of the spring arms according to claim 1.
  • An expedient development of the push-button panel according to the invention is characterized in that the spring arms and the connecting webs form a uniform grid arrangement for each keypad. This results in a simple geometry of the pushbutton field.
  • buttons extend over two or more whole raster units. In this way it is ensured that when using keys of different sizes there is no need to change the arrangement of the spring arms and connecting webs.
  • FIG. 1 and 2 show the structure according to the invention of a pushbutton field consisting of twelve pushbuttons 1 of the same size.
  • Elastic spring arms 4 are formed on two diagonally opposite lower corners of each push button 1.
  • the spring arms 4 of the individual pushbuttons 1 are arranged such that directly adjacent spring arms 4 of two pushbuttons 1 lying next to one another are directed obliquely downward in the opposite direction. From the two FIGURES it can also be seen that the spring arms 4 of the push buttons 1 are arranged in such a way that the upper and lower ends of the spring arms 4 lie directly opposite each other between adjacent rows of buttons. All lower ends of the elastic spring arms 4 are connected to connecting webs 6 running transversely to the longitudinal direction of the spring arms 4 via tapered portions 12. These tapers 12 can be seen particularly clearly in FIG. 4.
  • FIGS. 1 and 2 and 3 show a pushbutton field with eight different pushbuttons 2 and 3.
  • the structure corresponds in principle to the structure of the pushbutton field shown in FIGS. 1 and 2. It should only be shown here in connection with the first two FIGURES that the spring arms 4 and 5 and the connecting webs 6 and 7 form a uniform grid arrangement regardless of the size of the pushbutton field or the size of the individual pushbuttons, in order to provide a simple geometry receive. Different sized pushbuttons, e.g. B. 3, are used, these larger push buttons, z. B. 3, each over two or more whole grid units of the grid arrangement.

Landscapes

  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
EP92118755A 1991-11-26 1992-11-02 Drucktastenfeld aus Kunststoff insbesondere für Kommunikationsendgeräte Expired - Lifetime EP0544124B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9114712U 1991-11-26
DE9114712U DE9114712U1 (de) 1991-11-26 1991-11-26 Drucktastenfeld aus Kunststoff, insbesondere für Kommunikationsendgeräte

Publications (3)

Publication Number Publication Date
EP0544124A2 EP0544124A2 (de) 1993-06-02
EP0544124A3 EP0544124A3 (en) 1993-10-20
EP0544124B1 true EP0544124B1 (de) 1997-03-05

Family

ID=6873658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92118755A Expired - Lifetime EP0544124B1 (de) 1991-11-26 1992-11-02 Drucktastenfeld aus Kunststoff insbesondere für Kommunikationsendgeräte

Country Status (5)

Country Link
EP (1) EP0544124B1 (ja)
AT (1) ATE149736T1 (ja)
DE (2) DE9114712U1 (ja)
DK (1) DK0544124T3 (ja)
ES (1) ES2098418T3 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9114712U1 (de) * 1991-11-26 1992-03-19 Siemens AG, 8000 München Drucktastenfeld aus Kunststoff, insbesondere für Kommunikationsendgeräte
DE10203400C1 (de) * 2002-01-29 2003-06-18 Siemens Ag Tastaturanordnung
DE102004024312B3 (de) * 2004-05-15 2006-02-02 Diehl Ako Stiftung & Co. Kg Tastenkappenanordnung
DE102007045866B3 (de) * 2007-09-25 2008-10-23 Albrecht Jung Gmbh & Co. Kg Montageanordnung und deren Verwendung in einem Installationsgerät
DE102008038567B4 (de) 2008-08-20 2018-08-16 Leopold Kostal Gmbh & Co. Kg Anordnung von miteinander verbundenen Betätigungselementen für Drucktaster oder Druckschalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5924109Y2 (ja) * 1979-06-22 1984-07-17 シチズン時計株式会社 携帯用小型機器の押しボタン構造
DE2933150C2 (de) * 1979-08-16 1982-03-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Tastenfeld
US4315114A (en) * 1980-03-24 1982-02-09 International Telephone And Telegraph Corporation Keyboard switch assembly
GB2087154B (en) * 1980-11-04 1984-05-16 Standard Telephones Cables Ltd Keypad button
DE9114712U1 (de) * 1991-11-26 1992-03-19 Siemens AG, 8000 München Drucktastenfeld aus Kunststoff, insbesondere für Kommunikationsendgeräte

Also Published As

Publication number Publication date
ES2098418T3 (es) 1997-05-01
ATE149736T1 (de) 1997-03-15
EP0544124A3 (en) 1993-10-20
DE9114712U1 (de) 1992-03-19
DE59208111D1 (de) 1997-04-10
DK0544124T3 (da) 1997-07-21
EP0544124A2 (de) 1993-06-02

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