GB1298290A - An electrical switch - Google Patents

An electrical switch

Info

Publication number
GB1298290A
GB1298290A GB60508/70A GB6050870A GB1298290A GB 1298290 A GB1298290 A GB 1298290A GB 60508/70 A GB60508/70 A GB 60508/70A GB 6050870 A GB6050870 A GB 6050870A GB 1298290 A GB1298290 A GB 1298290A
Authority
GB
United Kingdom
Prior art keywords
contacts
projections
diaphragm
projection
actuating member
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
GB60508/70A
Inventor
Morris Krakinowski
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1298290A publication Critical patent/GB1298290A/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
    • H01H13/807—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 spatial arrangement of the contact sites, e.g. superimposed sites
    • 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
    • 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
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/03—Composite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/002—Materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/006—Force isolators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/016—Protection layer, e.g. for legend, anti-scratch
    • 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
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/006—Different feeling for different switch sites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/008—Pretravel to avoid inadvertent switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/02—After travel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/002—Actuators integral with membrane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/05—Force concentrator; Actuating dimple
    • 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
    • H01H2225/00—Switch site location
    • H01H2225/01—Different switch sites under one actuator in same plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/002—Layer thickness
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/018—Printed contacts; Metal foil

Landscapes

  • Push-Button Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1298290 Retractive switches INTERNATIONAL BUSINESS MACHINES CORP 21 Dec 1970 [23 Jan 1970] 60508/70 Heading H1N A switch comprises a fixed contact 27; a movable contact 24 mounted on a diaphragm 23 and an actuating member 20 located on the other side of the diaphragm to the contacts and having a projection 21 facing the diaphragm whereby on depression of the actuating member which is of elastic material the projection urges the contacts into engagement. The contacts 24, 27 are gold-plated copper laid on polyester diaphragms 23, 30; a separator sheet 25 having holes aligned with the contacts is placed between them. The actuating member is of solid neoprene and besides projections 21 has further, shorter projections 22 which limit travel and prevent damage to the contacts or diaphragm 23. Above the actuating member rests a thick block 16 of soft closed-cellular neoprene and above this, resting on a rigid aluminium frame 15 is an actuator sheet 10, 14 of polyurethane elastomer having raised portions 11 marked with indicia (Fig. 2, not shown). The sheet 10 can be readily removed and replaced by another bearing alternative indicia. The block 16 gives the switches a suitable "feel" and allows pretravel and overtravel. The stop projections 22 may be arranged in a circle or a square depending upon the shape of the raised operating portions 11; they may be discrete projections or a continuous ring surrounding the projection 21. More than one projection 21, each operating a pair of contacts, may be associated with a group of projections 22 below a single portion 11.
GB60508/70A 1970-01-23 1970-12-21 An electrical switch Expired GB1298290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US543170A 1970-01-23 1970-01-23

Publications (1)

Publication Number Publication Date
GB1298290A true GB1298290A (en) 1972-11-29

Family

ID=21715823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB60508/70A Expired GB1298290A (en) 1970-01-23 1970-12-21 An electrical switch

Country Status (17)

Country Link
US (1) US3617660A (en)
JP (1) JPS509646B1 (en)
AT (1) AT306410B (en)
BE (1) BE761091A (en)
BG (1) BG19206A3 (en)
CA (1) CA948247A (en)
CH (1) CH510914A (en)
CS (1) CS181661B2 (en)
ES (1) ES387211A1 (en)
FR (1) FR2090463A5 (en)
GB (1) GB1298290A (en)
HU (1) HU162423B (en)
IL (1) IL35919A (en)
NL (1) NL166356C (en)
PL (1) PL70354B1 (en)
SE (1) SE356384B (en)
YU (1) YU35482B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133216A (en) * 1982-11-30 1984-07-18 Nippon Mektron Kk Keyboard switch
GB2134322A (en) * 1979-11-26 1984-08-08 Franklin Neal Eventoff Dual switches

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858202A (en) * 1971-06-01 1974-12-31 Texas Instruments Inc Pushbutton keyboard system
US3725907A (en) * 1971-06-01 1973-04-03 Texas Instruments Inc Pushbutton keyboard system
US3743798A (en) * 1971-09-13 1973-07-03 North American Rockwell Elongated spring coil conductors applying tension force to pushbutton actuators in keyboard matrix switch assembly
US3723673A (en) * 1971-10-13 1973-03-27 Addmaster Corp Keyboard switch assembly with wire conductor matrix contact array
US3681723A (en) * 1971-12-09 1972-08-01 Western Electric Co Magnetic membrane switch
US3811025A (en) * 1973-05-17 1974-05-14 Lockheed Electronics Co Touch panel switch assembly
JPS5024770A (en) * 1973-07-05 1975-03-17
US3930083A (en) * 1974-07-26 1975-12-30 Litton Systems Inc Keyboard panel for an electric switch contact
JPS5168726A (en) * 1974-12-12 1976-06-14 Hosiden Electronics Co
US4022993A (en) * 1975-06-09 1977-05-10 Litton Systems, Inc. Switch assembly having electrically illuminated character display devices between transparent actuators and switch arrays
JPS5233068U (en) * 1975-08-29 1977-03-08
US4046975A (en) * 1975-09-22 1977-09-06 Chomerics, Inc. Keyboard switch assembly having internal gas passages preformed in spacer member
US4066850A (en) * 1976-06-04 1978-01-03 Ncr Corporation Keyboard switch assembly having interchangeable cover plate, indicating layer and actuator switch assembly in any operative combination
US4071718A (en) * 1976-10-22 1978-01-31 Bowmar Instrument Corporation Flat keyboard assembly having cover type membrane with protrusions to align switch components
JPS54122888A (en) * 1978-03-17 1979-09-22 Sakura Kk Keyswitch
US4258096A (en) * 1978-11-09 1981-03-24 Sheldahl, Inc. Composite top membrane for flat panel switch arrays
DE2902769C2 (en) * 1979-01-25 1982-12-09 Rudolf Schadow Gmbh, 1000 Berlin Push button switch
US4237358A (en) * 1979-05-07 1980-12-02 Oak Industries Inc. Isolation membrane switch
US4271333A (en) * 1979-09-25 1981-06-02 Northern Telecom, Inc. Pushbutton dial assembly
JPS58115027U (en) * 1982-02-01 1983-08-05 サンアロ−株式会社 push button panel
US5199557A (en) * 1988-01-28 1993-04-06 Mec A/S Method of producing an electric or electronic component, a method of producing a key and a key
EP0407012B1 (en) * 1989-07-05 1995-10-25 Acer Incorporated Membrane switch assembly
GB9004532D0 (en) * 1990-02-28 1990-04-25 Lucas Ind Plc Switch assembly
US5349263A (en) * 1991-10-09 1994-09-20 Mitsumi Electric Co., Ltd. Pointing device suitable for miniaturization
AU663640B2 (en) * 1993-02-22 1995-10-12 Illinois Tool Works Inc. Membrane switch
AU6018494A (en) * 1993-05-21 1994-12-20 Arthur D. Little Enterprises, Inc. User-configurable control device
FI98968C (en) 1995-07-24 1997-09-10 Nokia Mobile Phones Ltd Keyboard and key
US5986221A (en) * 1996-12-19 1999-11-16 Automotive Systems Laboratory, Inc. Membrane seat weight sensor
US6999009B2 (en) * 2001-08-31 2006-02-14 Logitech Europe S.A. Sensing keys for keyboard
US20090115642A1 (en) * 2007-10-31 2009-05-07 Tetsuji Omura Device actuated by key operations
JP5025425B2 (en) * 2007-10-31 2012-09-12 三洋電機株式会社 Portable device
AU2019239015A1 (en) * 2018-03-20 2020-11-12 Auckland Uniservices Limited Flexible switches, sensors and circuits

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165129B (en) * 1960-07-01
US3120584A (en) * 1960-11-29 1964-02-04 Western Electric Co Multisurface cross point switching mechanisms
US3290439A (en) * 1963-04-29 1966-12-06 Willcox Data encoding keyboard
GB1051897A (en) * 1963-06-11
US3308253A (en) * 1965-03-25 1967-03-07 Ibm Diaphragm switch having a diaphragm supported on an incompressible layer and an elastomer overlaying the diaphragm
US3350518A (en) * 1966-02-11 1967-10-31 Ibm Reader for punched record
US3382338A (en) * 1966-04-26 1968-05-07 Ibm Pushbutton actuator for elastomeric switch
US3494550A (en) * 1967-01-13 1970-02-10 Ibm Universal keyboard
US3472974A (en) * 1967-09-25 1969-10-14 Automatic Elect Lab Pushbutton switch activated by a slide with a plurality of toggle joints and cams

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134322A (en) * 1979-11-26 1984-08-08 Franklin Neal Eventoff Dual switches
GB2133216A (en) * 1982-11-30 1984-07-18 Nippon Mektron Kk Keyboard switch

Also Published As

Publication number Publication date
JPS509646B1 (en) 1975-04-15
NL166356B (en) 1981-02-16
DE2057373B2 (en) 1972-06-22
NL166356C (en) 1981-07-15
BE761091A (en) 1971-05-27
NL7100787A (en) 1971-07-27
ES387211A1 (en) 1973-12-16
IL35919A0 (en) 1971-02-25
YU15271A (en) 1980-09-25
FR2090463A5 (en) 1972-01-14
AT306410B (en) 1973-04-10
SE356384B (en) 1973-05-21
CS181661B2 (en) 1978-03-31
CA948247A (en) 1974-05-28
HU162423B (en) 1973-02-28
CH510914A (en) 1971-07-31
PL70354B1 (en) 1974-02-28
BG19206A3 (en) 1975-04-30
IL35919A (en) 1974-10-22
DE2057373A1 (en) 1971-08-12
US3617660A (en) 1971-11-02
YU35482B (en) 1981-02-28

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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