EP0181130A2 - Drucktastenstruktur für Fernsprecher oder dergleichen - Google Patents

Drucktastenstruktur für Fernsprecher oder dergleichen Download PDF

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Publication number
EP0181130A2
EP0181130A2 EP19850307724 EP85307724A EP0181130A2 EP 0181130 A2 EP0181130 A2 EP 0181130A2 EP 19850307724 EP19850307724 EP 19850307724 EP 85307724 A EP85307724 A EP 85307724A EP 0181130 A2 EP0181130 A2 EP 0181130A2
Authority
EP
European Patent Office
Prior art keywords
push
buttons
upper casing
casing
button switch
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Withdrawn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
EP19850307724
Other languages
English (en)
French (fr)
Inventor
Takeshi Susuki
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of EP0181130A2 publication Critical patent/EP0181130A2/de
Withdrawn legal-status Critical Current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
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • 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
    • H01H2221/08—Actuators composed of different parts
    • H01H2221/082—Superimposed actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/022—Telephone handset

Definitions

  • the present invention relates to a push button structure for push-button switches which are used with an electronic equipment such as a telephone.
  • the push-buttons each being engraved with a numeral or like symbol are manipulatable from outside the telephone casing.
  • the outer surface of a telephone casing is partly covered with an elastic sheet, or pad, and switches are arranged below the elastic sheet.
  • a push-button switch structure for use in an electronic equipment of the present invention comprises a casing made up of an upper casing part and a lower casing part which are assembled in an integral configuration, the upper casing being formed with a plurality of through openings, a plurality of push-buttons which respectively are received in the through openings to protrude outwardly beyond the upper casing, an elastic sheet member formed with retaining means integrally therewith for retaining the push-buttons such that each of the push-buttons is movable through the associated through opening when manipulated from outside, and a dealing member liquid-tightly isolating an interior of the casing from the outside by pressing peripheral portions of the elastic sheet member tightly against peripheral portions of an underside of the upper casing where the through openings are positioned.
  • a push-button switch structure for a telephone or like equipment includes a plurality of push-buttons which respectively are received in openings of an upper casing of the equipment.
  • An elastic sheet adaped to support the push-buttons is tightly pressed against the upper casing by a frame member, thereby maintaining the interior of the casing liquid-tight.
  • a pin-like projection extends downwardly from the center of and inside each of the push-buttons, which protrudes upwardly beyond the upper casing, while a generally U-shaped projection extends upwardly from that portion of the sheet which is aligned with an actuator of each switch body to be mated with the pin-like projection.
  • push-button switch structure for a telephone or the like of the present invention is susceptible of numerous physical embodiments, depending upon the environment and requirements of use, a substantial number of the herein shown and described embodiment have been made, tested and used, and all have performed in an eminently satisfactory manner.
  • a push-button mechanism which is installed in a telephone or the like is shown.
  • a push-button mechanism serves the dialing function and comprises a plurality of push-buttons 12 which are integral with a switch body 14.
  • a telephone 16 includes an upper casing 16a which constitutes an operating section, and a lower casing 16b.
  • the upper casing 16a is formed with a plurality of openings 18 therethrough.
  • the push-button mechanism 10 is fixed in place by a support plate 20 with the push-buttons 12 inserted into the openings 18 from below.
  • the problem with this kind of structure is that drops of water are apt to enter the telephone through the clearances between the edges of the openings 18 and those of the push-buttons 12, often inviting malfunctions.
  • a push-button mechanism 22 comprises a plurality of push-buttons 24 each of which is operatively mounted in a switch body 26 which in turn is rigidly mounted on a support plate 28. Meanwhile, the upper casing 16a of the telephone 16 is partly removed and has the removed area covered with an elastic sheet, or pad, 30. The mechanism 22 is disposed in the telephone 16 below the elastic pad 30 in such a manner that the push-buttons 24 make light contact with the underside of the pad 30. Although such a strcuture is superior to the structure of Fig. 1 concerning liquid-tightness, the operationability is poor because an individual has to manipulate the push-buttons 24 from above the pad 30.
  • a push-button mechanism 32 comprises push buttons 34 which are similar to those of Fig. 1 and a pad 36 which is similar to that of Fig. 2, the push-buttons 34 and the pad 36 being formed integrally with each other.
  • the upper casing 16a of the telephone 16 is provided with a plurality of openings 38, while a frame member 40 which is dimensioned large enough to surround the openings 38 is fixed to the upper casing 16a inside the telephone 12.
  • the integral push buttons 34 and pad 36 are rigidly supported by the upper casing 16a and the frame member 40.
  • Disposed below and aligned with the push buttons 34 are the switch bodies 26 and actuators 42 which respectively are associated with the switch bodies 26.
  • the switch bodies 26 and actuators 42 are mounted on a support plate 44 such that the actuators 42 remain in light contact with the underside of their associated push-buttons 34.
  • the dilemmatic situation with this kind of structure is that while each of the push-buttons 34 needs to be hard enough to promote efficient manipulation, the pad 40 needs to be elastic enough for the actuators 42 to be depressed.
  • the present invention constitutes a solution to the various problems particular to the prior art push-button switch structures as discussed above. Particularly, the present invention constitutes an improvement over the structure of Fig. 3 and allows the push buttons 34 and the pad 36 to be formed independently of each other and assembled together afterwards.
  • FIG. 4-6 A push-button switch structure embodying the present invention will be described with reference to Figs. 4-6.
  • Figs. 4-6 the same or similar structural elements as those shown in Fig. 3 are designated by like reference numerals.
  • the structure of the present invention shares the same construction with the structure of Fig. 3 concerning the upper casing 16a and lower casing 16b of the telephone 16, the frame 40, the support plate 44, the switch bodies 26 and their associated actuators 42 and, therefore, description of such parts and elements will be omitted.
  • the structure 46 comprises a plurality of push-buttons 48 each of which is provided with a pin-like projection 50 at the center of its interior and inserted into a corresponding one of the openings 38 of the upper casing 16a from below to extend upwardly beyond the upper casing 16a.
  • a sheet 52 which is made of rubber or like elastic material is provided with a plurality of generally U-shaped projections 54 on its upper surface, the projections 54 respectively being associated with the projections 50 of the push-buttons 48.
  • a plurality of lugs 56 extend downwardly from the lower surface of the sheet 52 to face the actuators 42 of the switch bodies 26.
  • the U-shaped projections 54 on the upper surface of the sheet 52 respctively are mated with the pin-like projections 50 of the push-buttons 48, while the lugs 56 on the lower surface of the sheet 52 are located close to, or substantially in contact with, the actuators 42 of the switch bodies 26.
  • the sheet 52 is tightly pressed along its edges by stepped portions 40a of the frame member 40 against projections 58 which extend in the peripheral portions of the underside of the upper casing 16a.
  • projections 58 which extend in the peripheral portions of the underside of the upper casing 16a.
  • the configuration of the push buttons 48 which does not have to be sheet-like frees the telephone from design limitations and promotes easy and efficient manipulation.
  • electrical circuit elements of the telephone 16 may be mounted on the lower casing 16b and the push-buttons 48 and others of the operating section of the telephone 16, on the upper casing 16a.
  • the subassembly associated with the upper casing 16a and that associated with the lower casing 16b can be produced independently of each other.

Landscapes

  • Push-Button Switches (AREA)
  • Telephone Set Structure (AREA)
EP19850307724 1984-11-01 1985-10-25 Drucktastenstruktur für Fernsprecher oder dergleichen Withdrawn EP0181130A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16612884U JPS6180540U (de) 1984-11-01 1984-11-01
JP166128/84U 1984-11-01

Publications (1)

Publication Number Publication Date
EP0181130A2 true EP0181130A2 (de) 1986-05-14

Family

ID=15825551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850307724 Withdrawn EP0181130A2 (de) 1984-11-01 1985-10-25 Drucktastenstruktur für Fernsprecher oder dergleichen

Country Status (3)

Country Link
EP (1) EP0181130A2 (de)
JP (1) JPS6180540U (de)
AU (1) AU4919185A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577859A1 (de) * 1992-07-02 1994-01-12 Siemens Aktiengesellschaft Tastatur
EP0729164A3 (de) * 1995-02-21 1998-03-18 Preh-Werke GmbH & Co. KG Tastenfeld mit Schutzfolie
WO2003025960A1 (de) * 2001-09-17 2003-03-27 Siemens Aktiengesellschaft Tastatur für kommunikationsendgeräte
WO2003102988A1 (en) * 2002-05-30 2003-12-11 Nokia Corporation A cover structure for a keypad
WO2008085915A1 (en) * 2007-01-06 2008-07-17 Apple Inc. Wired headset with integrated switch
AU2011232790B2 (en) * 2007-01-06 2015-03-19 Apple Inc. Wired headset with integrated switch

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4597041B2 (ja) * 2005-11-21 2010-12-15 株式会社リコー 操作パネル及び画像形成装置
KR101266704B1 (ko) * 2011-09-09 2013-05-22 주식회사 팬택 방수 키 구조체

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577859A1 (de) * 1992-07-02 1994-01-12 Siemens Aktiengesellschaft Tastatur
EP0729164A3 (de) * 1995-02-21 1998-03-18 Preh-Werke GmbH & Co. KG Tastenfeld mit Schutzfolie
WO2003025960A1 (de) * 2001-09-17 2003-03-27 Siemens Aktiengesellschaft Tastatur für kommunikationsendgeräte
WO2003102988A1 (en) * 2002-05-30 2003-12-11 Nokia Corporation A cover structure for a keypad
US7056042B2 (en) 2002-05-30 2006-06-06 Nokia Corporation Cover structure for a keypad
WO2008085915A1 (en) * 2007-01-06 2008-07-17 Apple Inc. Wired headset with integrated switch
AU2008205331B2 (en) * 2007-01-06 2011-07-07 Apple Inc. Wired headset with integrated switch
US8144915B2 (en) 2007-01-06 2012-03-27 Apple Inc. Wired headset with integrated switch
US8842871B2 (en) 2007-01-06 2014-09-23 M. Evans Hankey Wired headset with integrated switch
AU2011232790B2 (en) * 2007-01-06 2015-03-19 Apple Inc. Wired headset with integrated switch

Also Published As

Publication number Publication date
AU4919185A (en) 1986-05-08
JPS6180540U (de) 1986-05-29

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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

17P Request for examination filed

Effective date: 19851101

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): GB NL SE

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19870508

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SUSUKI, TAKESHI