GB1398884A - Switching device - Google Patents

Switching device

Info

Publication number
GB1398884A
GB1398884A GB4125572A GB4125572A GB1398884A GB 1398884 A GB1398884 A GB 1398884A GB 4125572 A GB4125572 A GB 4125572A GB 4125572 A GB4125572 A GB 4125572A GB 1398884 A GB1398884 A GB 1398884A
Authority
GB
United Kingdom
Prior art keywords
contact
contacts
coil
coil spring
small end
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
GB4125572A
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of GB1398884A publication Critical patent/GB1398884A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H01H1/403—Contacts forming part of a printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1398884 Retractive switches; switch contacts CASIO COMPUTER CO Ltd 6 Sept 1972 [9 March 1972] 41255/72 Heading H1N A conical coil spring 21, (22, 23) has its large end resting on outer contact 17, (18, 19) and when it is compressed by actuator 24, (25, 26) its small end makes contact with the centre contact 12, (13, 14) to bridge the two contacts. Alternatively the coil spring may be the other way up, i.e. the small end rests on contact 12 and its large end is depressed into contact with outer contact 17. In a second embodiment, Fig. 3 (not shown), the coil springs 41, 42, 43 are formed from a plane conductive sheet 28, which forms a common set of outer contacts, by a helical cut in the sheet above each inner contact and then pulling out the coil so formed into the shape of a conical coil.
GB4125572A 1972-03-09 1972-09-06 Switching device Expired GB1398884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2360772A JPS5535807B2 (en) 1972-03-09 1972-03-09

Publications (1)

Publication Number Publication Date
GB1398884A true GB1398884A (en) 1975-06-25

Family

ID=12115284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4125572A Expired GB1398884A (en) 1972-03-09 1972-09-06 Switching device

Country Status (6)

Country Link
US (1) US3842230A (en)
JP (1) JPS5535807B2 (en)
CH (1) CH546473A (en)
DE (1) DE2247905C3 (en)
FR (1) FR2174818B1 (en)
GB (1) GB1398884A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209434A (en) * 1987-08-19 1989-05-10 Crabtree Electrical Ind Ltd Electric switches

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435171A (en) * 1973-05-11 1976-05-12 Sumlock Anita Electronics Ltd Keyboards
US3934105A (en) * 1974-05-09 1976-01-20 Amp Incorporated Miniature switch with lighted indicator
US3968336A (en) * 1974-09-23 1976-07-06 Xerox Corporation Keyboard switch assembly having movable contact, and supporting helicline type legs disposed co-planar to common conductive sheet
JPS5913814B2 (en) * 1975-01-20 1984-04-02 株式会社山武 tatsuchi board
US3988551A (en) * 1975-04-03 1976-10-26 Magic Dot, Inc. Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors
JPS522267U (en) * 1975-06-24 1977-01-08
US4028515A (en) * 1975-09-15 1977-06-07 Illinois Tool Works Inc. Spring contact switch for dual in line multiple switch assembly having momentary actuated lighted indicators
US4028491A (en) * 1976-04-02 1977-06-07 Electronic Engineering Company Of California Transducer switching system
JPS5342185U (en) * 1976-09-17 1978-04-11
DE2854096C2 (en) * 1978-12-14 1982-04-08 Siemens AG, 1000 Berlin und 8000 München Key switches, in particular for keyboards in typewriters and similar devices
DE2905140A1 (en) * 1979-02-10 1980-08-21 Vdo Schindling ELECTRICAL PRESSURE SWITCH FOR PCB
US4529848A (en) * 1981-11-05 1985-07-16 Cherry Electrical Products Corporation Switch with conical spring actuator
DE3229348A1 (en) * 1982-08-06 1984-02-09 Preh, Elektrofeinmechanische Werke, Jakob Preh, Nachf. Gmbh & Co, 8740 Bad Neustadt CONTACT ARRANGEMENT
US4468542A (en) * 1983-05-16 1984-08-28 Kb Denver, Inc. Keyboard assembly
US4584444A (en) * 1984-09-21 1986-04-22 Topre Corporation Keyboard switch
FR2583568A1 (en) * 1985-06-14 1986-12-19 Seb Sa THERMAL CIRCUIT BREAKER.
US4985605A (en) * 1988-07-01 1991-01-15 Judco Manufacturing, Incorporated Compact switching apparatus and method of construction
US4972056A (en) * 1988-08-01 1990-11-20 Wu I Long Keyswitch
AU2762988A (en) * 1988-08-01 1990-02-01 I-Long Wu Push button switch with upward-biasing coil spring
DE4113180C1 (en) * 1991-04-23 1992-11-05 Bodenseewerk Geraetetechnik Gmbh, 7770 Ueberlingen, De
DE4442119C2 (en) * 1994-11-26 1998-04-09 Mannesmann Vdo Ag Push button
DK0970544T3 (en) * 1997-03-26 2000-12-11 Kirk Acoustics As Contact spring and tools for handling this
JPH10326534A (en) * 1997-05-26 1998-12-08 Tanita:Kk Structure of switch
US6555774B1 (en) * 2000-07-28 2003-04-29 Microsoft Corporation Lever keyswitch
WO2015036048A1 (en) * 2013-09-16 2015-03-19 Siemens Aktiengesellschaft Operator control- and detector device having differentiated signal generation
TWI556788B (en) * 2014-08-22 2016-11-11 神基科技股份有限公司 Switch structure for an electronic surgical device
DE102017111919A1 (en) * 2017-05-31 2018-12-06 Valeo Schalter Und Sensoren Gmbh Operating device for operating at least one device of a motor vehicle, with a separate spring element as ground connection and motor vehicle

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE560809C (en) * 1932-10-07 Robert Bosch Akt Ges Plug connection for push button switch
US2734104A (en) * 1956-02-07 gollhofer
FR872778A (en) * 1939-08-28 1942-06-18 Kohle Und Eisenforschung Gmbh Quenching tank, intended in particular for the improvement treatment of special steels
BE438400A (en) * 1939-11-11
US2444552A (en) * 1945-10-09 1948-07-06 Bruno Martinuzzi Push button
GB732540A (en) * 1951-12-15 1955-06-29 Clive Leedam Improvements relating to the switching of an electric indicator lamp by a pedal operated braking system of a road vehicle
GB1092587A (en) * 1965-03-10 1967-11-29 Fiat Spa Pushbuton switch, for operating accoustic horns on motor vehicles
US3379851A (en) * 1966-02-09 1968-04-23 United Carr Inc Pushbutton using three stage unitary spring as a contactor means
US3434095A (en) * 1967-04-17 1969-03-18 Itt Programming switch
CH504770A (en) * 1970-01-26 1971-03-15 Holzer Patent Ag Contact arrangement on a cam switch, in particular for use in program switching mechanisms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209434A (en) * 1987-08-19 1989-05-10 Crabtree Electrical Ind Ltd Electric switches
GB2209434B (en) * 1987-08-19 1991-11-27 Crabtree Electrical Ind Ltd Switches

Also Published As

Publication number Publication date
CH546473A (en) 1974-02-28
DE2247905C3 (en) 1981-07-16
DE2247905A1 (en) 1973-09-20
DE2247905B2 (en) 1975-05-28
JPS5535807B2 (en) 1980-09-17
FR2174818A1 (en) 1973-10-19
JPS4892884A (en) 1973-12-01
US3842230A (en) 1974-10-15
FR2174818B1 (en) 1976-01-23

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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