EP0157037A3 - Long-stroke push-button switch - Google Patents

Long-stroke push-button switch Download PDF

Info

Publication number
EP0157037A3
EP0157037A3 EP84306247A EP84306247A EP0157037A3 EP 0157037 A3 EP0157037 A3 EP 0157037A3 EP 84306247 A EP84306247 A EP 84306247A EP 84306247 A EP84306247 A EP 84306247A EP 0157037 A3 EP0157037 A3 EP 0157037A3
Authority
EP
European Patent Office
Prior art keywords
keytop
travel
lever
spring
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Withdrawn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
EP84306247A
Other languages
German (de)
French (fr)
Other versions
EP0157037A2 (en
Inventor
James C. Gilbert
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.)
Mercury Systems Inc
Original Assignee
Bowmar Instrument 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 Bowmar Instrument Corp filed Critical Bowmar Instrument Corp
Publication of EP0157037A2 publication Critical patent/EP0157037A2/en
Publication of EP0157037A3 publication Critical patent/EP0157037A3/en
Withdrawn legal-status Critical Current

Links

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
    • H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/002—Longer travel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H01H2221/026—Guiding or lubricating nylon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/05—Actuator part on body
    • H01H2233/054—Snap coupling
    • H01H2233/056—Snap coupling with limited freedom
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2237/00—Mechanism between key and laykey
    • H01H2237/004—Cantilever

Abstract

A long-stroke push-button switch has contacts which close in the middle of the travel and remain closed through the last half of the travel. The switch has a keytop (12) and a lever (42) interconnected by a stiff spring (38). One end of the lever is pivotably mounted (at 92) in the switch housing. A downwardly projecting actuator (84) located on the under­ side of the lever rests upon the top of a normally-open snap-dome switch (78, 80). The axis of the snap-dome switch is located off-centre with respect to the centre line of the keytop. When the keytop (12) is depressed, the spring (38) is compressed during the first halt of the keytop travel. When the spring is partially compressed, further pressure on the keytop causes the lever (42) to pivot and close the snap-­ dome switch contacts (78, 80) in the middle of the travel. Continued pressure on the keytop (12) further compresses the spring and allows the keytop to move through the last half of the travel after the contacts have closed.
EP84306247A 1984-03-29 1984-09-12 Long-stroke push-button switch Withdrawn EP0157037A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59449284A 1984-03-29 1984-03-29
US594492 1984-03-29

Publications (2)

Publication Number Publication Date
EP0157037A2 EP0157037A2 (en) 1985-10-09
EP0157037A3 true EP0157037A3 (en) 1986-11-05

Family

ID=24379099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84306247A Withdrawn EP0157037A3 (en) 1984-03-29 1984-09-12 Long-stroke push-button switch

Country Status (1)

Country Link
EP (1) EP0157037A3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209437A1 (en) * 1992-03-24 1993-09-30 Schurter Gmbh Stroke extension element for membrane keyboards
DE19726529C2 (en) * 1997-06-23 2001-07-05 Eaton Controls Gmbh Electrical push button
DE19853753A1 (en) 1998-11-21 2000-05-25 Preh Elektro Feinmechanik Control keyboard, in particular for a motor vehicle air conditioning system
DE10256171B4 (en) * 2002-12-02 2012-04-26 BSH Bosch und Siemens Hausgeräte GmbH Household appliance and switch for use in a household appliance
MY156814A (en) 2007-03-15 2016-03-31 Novartis Ag Organic compounds and their uses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648394A (en) * 1970-01-12 1972-03-14 Burroughs Corp Keytop structure
US3749859A (en) * 1972-04-19 1973-07-31 Colorado Instr Inc Keyboard switch assembly with improved hermetically sealed diaphragm contact structure
US3916150A (en) * 1974-03-04 1975-10-28 Stackpole Component Co Data machine keyboard assembly with elongated key cap for actuating an electric switch
EP0118131A2 (en) * 1983-03-07 1984-09-12 Oak Industries Inc. Tactile feel switch with positive switch actuation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648394A (en) * 1970-01-12 1972-03-14 Burroughs Corp Keytop structure
US3749859A (en) * 1972-04-19 1973-07-31 Colorado Instr Inc Keyboard switch assembly with improved hermetically sealed diaphragm contact structure
US3916150A (en) * 1974-03-04 1975-10-28 Stackpole Component Co Data machine keyboard assembly with elongated key cap for actuating an electric switch
EP0118131A2 (en) * 1983-03-07 1984-09-12 Oak Industries Inc. Tactile feel switch with positive switch actuation

Also Published As

Publication number Publication date
EP0157037A2 (en) 1985-10-09

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Legal Events

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

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19861001

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GILBERT, JAMES C.