GB1427971A - Electric switch and a movable contact element therefor - Google Patents

Electric switch and a movable contact element therefor

Info

Publication number
GB1427971A
GB1427971A GB671873A GB671873A GB1427971A GB 1427971 A GB1427971 A GB 1427971A GB 671873 A GB671873 A GB 671873A GB 671873 A GB671873 A GB 671873A GB 1427971 A GB1427971 A GB 1427971A
Authority
GB
United Kingdom
Prior art keywords
contact element
switch
portions
central portion
leg
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
GB671873A
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.)
WILD ROVER CORP
Original Assignee
WILD ROVER 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
Priority to US00265452A priority Critical patent/US3826885A/en
Application filed by WILD ROVER CORP filed Critical WILD ROVER CORP
Priority to GB671873A priority patent/GB1427971A/en
Priority to NL7302401A priority patent/NL7302401A/xx
Priority to DE19732311447 priority patent/DE2311447A1/en
Priority to FR7308888A priority patent/FR2221799B1/fr
Priority claimed from FR7308888A external-priority patent/FR2221799B1/fr
Publication of GB1427971A publication Critical patent/GB1427971A/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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • 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
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • 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
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring

Landscapes

  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)
  • Contacts (AREA)
  • Slide Switches (AREA)

Abstract

1427971 Retractive switches; switch contacts WILD ROVER CORP 12 Feb 1973 6718/73 Heading H1N A retractive switch comprises an open-ended housing 22 closed at one end by a base 28 mounting fixed contacts 30, 32 and at the other end by an actuating element 24 and contains a movable contact element 26 having three integral resilient leg portions 26b, 26c, 26d which are maintained in compressive stress between the inner surface of the base and a protruberance 24c of the actuating element 24 when the switch is in an unactuated condition. The leg portions include respective feet portions 26e, 26f, 26g which are dimpled to reduce friction when the leg portions are flexed about attachment regions 26j, 26k, 26m and they exhibit polar symmetry about a generally circular central portion 26a by being equi-angularly spaced at 120 degrees with each leg portion extending arcuately to subtend an angle of approximately 90 degrees. Straight contact members 26h in the form of wires affixed to the central portion 26a either directly or via an intervening plate 26i, or comprising embossed portions of the central area are orientated to extend parallel to a line between the centre of 26a and one of the feet portions in order to avoid unbalanced movement of the contact element 26 or incomplete bridging of the fixed contacts 30, 32 when the switch is actuated by means of a force, in excess of the threshold value required to overcome the initial compressive stress of the contact element, is applied to the central portion 26a via the protuberance 24c of the actuating element 24. Representative force/ deflection characteristics are analysed with reference to diagram Fig. 6A (not shown). Alternative forms of leg portion construction for the beryllium copper contact element and various materials suitable for the contact members 26h are detailed.
GB671873A 1972-06-23 1973-02-12 Electric switch and a movable contact element therefor Expired GB1427971A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00265452A US3826885A (en) 1972-06-23 1972-06-23 Pushbutton switch having spider-shaped contact contact carrier
GB671873A GB1427971A (en) 1972-06-23 1973-02-12 Electric switch and a movable contact element therefor
NL7302401A NL7302401A (en) 1972-06-23 1973-02-21
DE19732311447 DE2311447A1 (en) 1972-06-23 1973-03-08 ELECTRIC SWITCH
FR7308888A FR2221799B1 (en) 1972-06-23 1973-03-13

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US00265452A US3826885A (en) 1972-06-23 1972-06-23 Pushbutton switch having spider-shaped contact contact carrier
GB671873A GB1427971A (en) 1972-06-23 1973-02-12 Electric switch and a movable contact element therefor
NL7302401A NL7302401A (en) 1972-06-23 1973-02-21
DE19732311447 DE2311447A1 (en) 1972-06-23 1973-03-08 ELECTRIC SWITCH
FR7308888A FR2221799B1 (en) 1972-06-23 1973-03-13

Publications (1)

Publication Number Publication Date
GB1427971A true GB1427971A (en) 1976-03-10

Family

ID=27510300

Family Applications (1)

Application Number Title Priority Date Filing Date
GB671873A Expired GB1427971A (en) 1972-06-23 1973-02-12 Electric switch and a movable contact element therefor

Country Status (4)

Country Link
US (1) US3826885A (en)
DE (1) DE2311447A1 (en)
GB (1) GB1427971A (en)
NL (1) NL7302401A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331851A (en) * 1980-06-16 1982-05-25 Texas Instruments Incorporated Printed circuit board having data input devices mounted thereon and input devices therefor
EP0163782A1 (en) * 1983-04-13 1985-12-11 Wico Corporation Pushbutton actuator assembly

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2449255C3 (en) * 1973-10-20 1978-11-30 Nippon Electric Co., Ltd., Tokio Encapsulated multi-pole switch
FR2476900A1 (en) * 1980-02-27 1981-08-28 Telephonie Ind Commerciale PUSH BUTTON FOR CONTROL KEYBOARD AND METHOD OF MAKING SAME
US4453052A (en) * 1982-02-23 1984-06-05 David W. Semian Adjustable pressure switch
US4459443A (en) * 1982-12-27 1984-07-10 Cherry Electrical Products Corporation Tactile feedback switch
JPS6075929U (en) * 1983-10-31 1985-05-28 株式会社ジエルコ push button switch
US4608468A (en) * 1984-12-26 1986-08-26 Motorola, Inc. Hermetically sealed impact switch
US4924040A (en) * 1986-09-25 1990-05-08 Illinois Tool Works Inc. Electrical switching apparatus
US4943690A (en) * 1989-03-06 1990-07-24 Fifth Dimension, Inc. Position insensitive shock sensor with closure delay
TW587836U (en) * 2002-10-25 2004-05-11 Hon Hai Prec Ind Co Ltd Tact switch
US8232485B2 (en) 2009-09-28 2012-07-31 Research In Motion Limited Key assembly for an electronic device having a multi-character keycap
US8183478B2 (en) * 2009-10-26 2012-05-22 Research In Motion Limited Key assembly for an electronic device having a connected keycap

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143605A (en) * 1961-08-10 1964-08-04 Edwin S Gaynor Combination push-push and momentary switch
GB1213699A (en) * 1968-05-17 1970-11-25 Standard Telephones Cables Ltd Improvements in or relating to switches
GB1278778A (en) * 1968-08-19 1972-06-21 Simplifix Couplings Ltd Improvements in pressure actuated switches
GB1260027A (en) * 1968-12-30 1972-01-12 Wild Rover Corp Low throw touch operable electric switches
US3676617A (en) * 1970-10-16 1972-07-11 Gen Automotive Specialty Co Switch having spider-shaped contact carrier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331851A (en) * 1980-06-16 1982-05-25 Texas Instruments Incorporated Printed circuit board having data input devices mounted thereon and input devices therefor
EP0163782A1 (en) * 1983-04-13 1985-12-11 Wico Corporation Pushbutton actuator assembly

Also Published As

Publication number Publication date
DE2311447A1 (en) 1974-09-19
NL7302401A (en) 1974-08-23
US3826885A (en) 1974-07-30

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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