CA2242959A1 - Key switch for a keyboard - Google Patents

Key switch for a keyboard Download PDF

Info

Publication number
CA2242959A1
CA2242959A1 CA002242959A CA2242959A CA2242959A1 CA 2242959 A1 CA2242959 A1 CA 2242959A1 CA 002242959 A CA002242959 A CA 002242959A CA 2242959 A CA2242959 A CA 2242959A CA 2242959 A1 CA2242959 A1 CA 2242959A1
Authority
CA
Canada
Prior art keywords
cap
key
spring holder
spring
key cap
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.)
Granted
Application number
CA002242959A
Other languages
French (fr)
Other versions
CA2242959C (en
Inventor
Gear Huang
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.)
EJT TECHNOLOGIES Inc
Original Assignee
Silitek 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 Silitek Corp filed Critical Silitek Corp
Priority to CA002242959A priority Critical patent/CA2242959C/en
Priority to GB9818867A priority patent/GB2341005B/en
Priority to FR9811030A priority patent/FR2783086B3/en
Publication of CA2242959A1 publication Critical patent/CA2242959A1/en
Application granted granted Critical
Publication of CA2242959C publication Critical patent/CA2242959C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01H2215/03—Sound
    • 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
    • H01H2235/00—Springs
    • H01H2235/002—Linear coil spring combined with dome spring

Landscapes

  • Push-Button Switches (AREA)

Abstract

A key switch includes a rubber cone supported on a membrane circuit board inside a keyboard, a key base covered on the rubber cone to hold a vertically slidably key cap, a spring holder cap vertically slidably coupled to the key cap inside the key base to hold spring between the key cap and the spring holder cap, the key cap has two inner hooks respectively extended from two opposite sides of a bottom coupling frame thereof for engagement with the spring holder cap, the spring holder cap having outward hooks raised from the topmost edge thereof at two opposite sides for engagement with the inner hooks of the key cap, the rubber cone being compressed by the spring holder cap to trigger a contact at the membrane circuit board and the spring suddenly extending out to produce a click sound when the key cap is depressed.
CA002242959A 1998-08-25 1998-08-25 Key switch for a keyboard Expired - Fee Related CA2242959C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002242959A CA2242959C (en) 1998-08-25 1998-08-25 Key switch for a keyboard
GB9818867A GB2341005B (en) 1998-08-25 1998-08-28 Key switch for a keyboard
FR9811030A FR2783086B3 (en) 1998-08-25 1998-09-03 KEY SWITCH FOR KEYBOARD

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA002242959A CA2242959C (en) 1998-08-25 1998-08-25 Key switch for a keyboard
GB9818867A GB2341005B (en) 1998-08-25 1998-08-28 Key switch for a keyboard
FR9811030A FR2783086B3 (en) 1998-08-25 1998-09-03 KEY SWITCH FOR KEYBOARD

Publications (2)

Publication Number Publication Date
CA2242959A1 true CA2242959A1 (en) 2000-02-25
CA2242959C CA2242959C (en) 2002-07-09

Family

ID=33032756

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002242959A Expired - Fee Related CA2242959C (en) 1998-08-25 1998-08-25 Key switch for a keyboard

Country Status (3)

Country Link
CA (1) CA2242959C (en)
FR (1) FR2783086B3 (en)
GB (1) GB2341005B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2463341B (en) * 2009-06-04 2011-09-14 Cheng Uei Prec Ind Co Ltd Key switch
CN108305804B (en) * 2017-01-13 2019-08-16 光宝电子(广州)有限公司 Mechanical switch structure
CN111180240B (en) * 2018-11-09 2022-01-21 光宝电子(广州)有限公司 Key structure and keyboard

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1155954B (en) * 1982-09-28 1987-01-28 Olivetti & Co Spa CONTACT KEYBOARD
US5442152A (en) * 1994-09-28 1995-08-15 Focus Electronic Co., Ltd. Computer key switch

Also Published As

Publication number Publication date
CA2242959C (en) 2002-07-09
FR2783086B3 (en) 2000-08-11
GB2341005A (en) 2000-03-01
FR2783086A3 (en) 2000-03-10
GB2341005B (en) 2002-12-11
GB9818867D0 (en) 1998-10-21

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130827