GB1430399A - Keyboard switch assembly - Google Patents

Keyboard switch assembly

Info

Publication number
GB1430399A
GB1430399A GB5917273A GB5917273A GB1430399A GB 1430399 A GB1430399 A GB 1430399A GB 5917273 A GB5917273 A GB 5917273A GB 5917273 A GB5917273 A GB 5917273A GB 1430399 A GB1430399 A GB 1430399A
Authority
GB
United Kingdom
Prior art keywords
conductors
sheet
board
insulating
contact portions
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
GB5917273A
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 GB1430399A publication Critical patent/GB1430399A/en
Expired 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
    • H01H13/78—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 characterised by the contacts or the contact sites
    • H01H13/785—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 characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • 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
    • H01H13/7006—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 comprising a separate movable contact element for each switch site, all other elements being integrated in layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/026—Material non precious
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/04—Form of contacts to solve particular problems to facilitate connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/042—Form of contacts to solve particular problems to avoid cross-overs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/016—Separate bridge contact
    • H01H2205/024—Means to facilitate positioning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/024—Properties of the substrate
    • H01H2209/032—Properties of the substrate non elastomeric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/026—Separate dome contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/014—Electro deposition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/016—Selective etching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/024—Packing between substrate and membrane
    • H01H2229/026—Riveting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/002—Calculator, computer

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1430399 Retractive switches BOWMAR INSTRUMENT CORP 20 Dec 1973 [2 Jan 1973] 59172/73 Heading H1N A keyboard switch assembly comprises pushbuttons 22 each of which actuates a resilient, conductive switch device 14 from a rest position to a deflected position in which it interconnects co-planar conductors such as 30-3, 32, Fig. 5, carried by, for example by being printed on, an insulating board 12, at least one other conductor being provided on the board spaced from and co-planar with the first-mentioned conductors and extending under the switch device but having no electrical connection therewith in either of its positions. As shown, the switch device is a snap-acting dome of, for example, square, triangular or circular shape and formed with dimples or projections 64, 66 on its periphery and at the centre thereof respectively, which form contact portions for engaging the conductors. The switching devices are located in apertures 74 in an insulating sheet 16 superimposed on the board 12 and over which is laid a flexible insulating cover sheet 18. The assembly is completed by a cover member 20 which is apertured at 76 for retention and location of the push-buttons. The latter have X-shaped projections 78 which act through the sheet 18 on the switching devices. The conductors and parts thereof which are not engaged by a particular switching device may be covered with an insulating layer (56), Fig. 7 (not shown), and the contact portions of the conductors may be plated with gold on nickel. Fig. 11 shows a modification in which an insulating sheet 82 extends between the sheet 16 and board 12 and has apertures such as 86, 88 which expose the contact portions of the conductors for engagement by the dimples 64<SP>1</SP>, 66 of the switching device 14<SP>1</SP>.
GB5917273A 1973-01-02 1973-12-20 Keyboard switch assembly Expired GB1430399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32014773A 1973-01-02 1973-01-02

Publications (1)

Publication Number Publication Date
GB1430399A true GB1430399A (en) 1976-03-31

Family

ID=23245080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5917273A Expired GB1430399A (en) 1973-01-02 1973-12-20 Keyboard switch assembly

Country Status (14)

Country Link
US (1) US3796843A (en)
JP (1) JPS557643B2 (en)
AR (1) AR199821A1 (en)
AU (1) AU6390273A (en)
BR (1) BR7310277D0 (en)
CA (1) CA992124A (en)
DE (1) DE2365083C3 (en)
FR (1) FR2212950A5 (en)
GB (1) GB1430399A (en)
HK (1) HK24077A (en)
HU (1) HU170381B (en)
IT (1) IT1005548B (en)
SE (1) SE393695B (en)
SU (1) SU597352A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229577A (en) * 1989-03-23 1990-09-26 Well Treasure Ind Ltd Mounting contact elements on printed circuit boards

Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000389A (en) * 1971-08-23 1976-12-28 Hewlett-Packard Company Printed circuit board and contact assembly for keyboard switch assemblies
FR2196515B1 (en) * 1972-08-18 1977-09-16 Matsushita Electric Ind Co Ltd
USRE30923E (en) 1973-01-02 1982-05-04 Bowmar Instrument Corporation Calculator keyboard switch with disc spring contact and printed circuit board
GB1435171A (en) * 1973-05-11 1976-05-12 Sumlock Anita Electronics Ltd Keyboards
US3858020A (en) * 1973-07-30 1974-12-31 Staco Switch Inc Pushbutton with spring contactor
US3860771A (en) * 1973-10-29 1975-01-14 Chomerics Inc Keyboard switch assembly with dome shaped actuator having associated underlying contactor means
US3905233A (en) * 1974-03-26 1975-09-16 Us Army Package penetration indicating apparatus
AT337275B (en) * 1974-05-07 1977-06-27 Preh Elektro Feinmechanik ULTRASONIC REMOTE CONTROL DEVICE
US4074088A (en) * 1974-05-21 1978-02-14 Texas Instruments Incorporated Keyboard apparatus and method of making
US3908109A (en) * 1974-06-14 1975-09-23 Mohawk Data Sciences Corp Dome shaped switch member
US4018999A (en) * 1974-09-12 1977-04-19 Mohawk Data Sciences Corporation Keyboard switch assembly having adhesive position retainer element
JPS5133876A (en) * 1974-09-18 1976-03-23 Gikoo Kk
US3941964A (en) * 1974-12-09 1976-03-02 Bowmar Instrument Corporation Push-button type binary switch device
US4032728A (en) * 1974-12-20 1977-06-28 Olympia Werke Ag Push button switch
JPS5180975A (en) * 1975-01-10 1976-07-15 Gikoo Kk PUTSUSHUBOTANSUITSUCHI
US3996427A (en) * 1975-01-10 1976-12-07 Texas Instruments Incorporated Pushbutton keyboard system and method of making same
US3995128A (en) * 1975-01-10 1976-11-30 Texas Instruments Incorporated Pushbutton keyboard system having preformed recessed support with contacts mounted on face and in recesses
US3973091A (en) * 1975-02-03 1976-08-03 Texas Instruments Incorporated Pushbutton keyboard assembly having pole and inner contacts simultaneously engaged by a bridging contact
US3995126A (en) * 1975-04-03 1976-11-30 Magic Dot, Inc. Membrane keyboard apparatus
CA1034175A (en) * 1975-04-16 1978-07-04 Pak-Jong Chu Multi-contact push-button switch
US4029916A (en) * 1975-04-18 1977-06-14 Northern Electric Company Limited Multi-contact push-button switch and plural embodiment for keyboard switch assembly
US3996429A (en) * 1975-04-18 1976-12-07 Northern Electric Company Limited Multi-contact push-button switch having plural prestressed contact members designed to provide plural circuit simultaneous switching inputs
JPS5838494Y2 (en) * 1975-09-10 1983-08-31 アルプスデンキ カブシキガイシヤ Oshi button switch
US4046981A (en) * 1975-12-24 1977-09-06 Texas Instruments Incorporated Keyboard switch with printed wiring board structure and its method of manufacture
US4045636A (en) * 1976-01-28 1977-08-30 Bowmar Instrument Corporation Keyboard switch assembly having printed circuit board with plural layer exposed contacts and undersurface jumper connections
FR2343323A1 (en) * 1976-03-05 1977-09-30 Schoeller & Co Elektrotech DECLICK SWITCH ESPECIALLY FOR TELEVISION AND RADIO RECEIVERS
JPS52119071U (en) * 1976-03-08 1977-09-09
JPS538585U (en) * 1976-07-07 1978-01-25
DE7624175U1 (en) * 1976-07-31 1976-11-25 Wilhelm Ruf Kg, 8000 Muenchen keyboard
US4071718A (en) * 1976-10-22 1978-01-31 Bowmar Instrument Corporation Flat keyboard assembly having cover type membrane with protrusions to align switch components
US4123627A (en) * 1976-12-06 1978-10-31 Texas Instruments Incorporated Keyboard apparatus
DE2705756C2 (en) * 1977-02-11 1982-09-02 Alps Electric Co., Ltd., Tokyo Push button switch for electronic desk calculators or the like.
US4085306A (en) * 1977-06-09 1978-04-18 Kb-Denver, Inc. Keyboard switch assemblies
US4127752A (en) * 1977-10-13 1978-11-28 Sheldahl, Inc. Tactile touch switch panel
JPS5470072U (en) * 1977-10-28 1979-05-18
JPS5463279A (en) * 1977-10-28 1979-05-22 Fujitsu Ltd Pushhbutton switch
US4254309A (en) * 1978-12-18 1981-03-03 Texas Instruments Incorporated Snap-through characteristic keyboard switch
US4195210A (en) * 1979-02-27 1980-03-25 Kb-Denver, Inc. Switching assemblies
US4349708A (en) * 1979-08-22 1982-09-14 Atari, Inc. Joystick control
US4314117A (en) * 1980-07-24 1982-02-02 Re-Al, Inc. Membrane contact switch
US4355483A (en) * 1981-01-05 1982-10-26 The Quaker Oats Company Switch mechanism
US4488016A (en) * 1983-01-24 1984-12-11 Amp Incorporated Membrane switch having crossing circuit conductors
JPS6196650U (en) * 1984-11-30 1986-06-21
JPS62171126U (en) * 1986-04-18 1987-10-30
JPS62136026U (en) * 1986-02-22 1987-08-27
JPS6328220U (en) * 1986-08-11 1988-02-24
JPS63131416A (en) * 1986-11-20 1988-06-03 ブラザー工業株式会社 Printed circuit board
GB2214352A (en) * 1988-01-12 1989-08-31 Electronic Components Ltd Sealed electrical switch
US6222525B1 (en) * 1992-03-05 2001-04-24 Brad A. Armstrong Image controllers with sheet connected sensors
DE9300501U1 (en) * 1992-12-14 1993-04-01 Abb Patent Gmbh, 68309 Mannheim Electrical switching device
US5512721A (en) * 1993-09-28 1996-04-30 Unisurge, Inc. Autoclavable electrical switch assembly for use with a medical device and medical device using the same
US20040160414A1 (en) * 1996-07-05 2004-08-19 Armstrong Brad A. Image controller
US8674932B2 (en) * 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
US5755026A (en) * 1996-08-15 1998-05-26 Delco Electronics Corporation Method of preventing condensation on a surface housing an electronic apparatus
JP3765723B2 (en) * 2000-11-15 2006-04-12 ホシデン株式会社 Push-button switch
JP2003068158A (en) * 2001-08-30 2003-03-07 Shin Etsu Polymer Co Ltd Push button switch device
JPWO2005124805A1 (en) * 2004-06-15 2008-04-17 日本航空電子工業株式会社 Dome contact and multistage electric switch using the same
US7091433B2 (en) * 2004-09-17 2006-08-15 Emerson Electric Co. Low profile automotive latch release switch assembly
US7067757B1 (en) * 2004-12-17 2006-06-27 Siemens Communications Inc. Multi-tier keypad assembly
DE102006010811B4 (en) * 2006-03-07 2018-03-01 Huf Hülsbeck & Fürst Gmbh & Co. Kg Switching element and actuator so that as well as door handle with this actuator
US7829812B2 (en) * 2007-07-03 2010-11-09 Sony Ericsson Mobile Communications Ab Input device and an electronic device comprising an input device
US7652216B2 (en) * 2007-12-18 2010-01-26 Streamlight, Inc. Electrical switch, as for controlling a flashlight
US7700890B2 (en) * 2008-01-15 2010-04-20 Research In Motion Limited Key dome assembly with improved tactile feedback
JP5717249B2 (en) * 2011-04-22 2015-05-13 アルプス電気株式会社 Movable contact member and switch device using the movable contact member

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165129B (en) * 1960-07-01
JPS427547Y1 (en) * 1964-03-19 1967-04-12
JPS4718061U (en) * 1971-03-31 1972-10-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2229577A (en) * 1989-03-23 1990-09-26 Well Treasure Ind Ltd Mounting contact elements on printed circuit boards

Also Published As

Publication number Publication date
HK24077A (en) 1977-05-27
BR7310277D0 (en) 1974-08-29
SU597352A3 (en) 1978-03-05
SE393695B (en) 1977-05-16
JPS557643B2 (en) 1980-02-27
IT1005548B (en) 1976-09-30
AU6390273A (en) 1975-06-26
HU170381B (en) 1977-06-28
FR2212950A5 (en) 1974-07-26
DE2365083A1 (en) 1974-07-18
CA992124A (en) 1976-06-29
AR199821A1 (en) 1974-09-30
DE2365083C3 (en) 1980-02-07
US3796843A (en) 1974-03-12
DE2365083B2 (en) 1977-02-17
JPS49102245A (en) 1974-09-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee