GB1363777A - Toggle mechanism - Google Patents

Toggle mechanism

Info

Publication number
GB1363777A
GB1363777A GB3885672A GB3885672A GB1363777A GB 1363777 A GB1363777 A GB 1363777A GB 3885672 A GB3885672 A GB 3885672A GB 3885672 A GB3885672 A GB 3885672A GB 1363777 A GB1363777 A GB 1363777A
Authority
GB
United Kingdom
Prior art keywords
plate
plunger
spring
capacitive
switch
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
GB3885672A
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
Priority to US18358371A priority Critical
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1363777A publication Critical patent/GB1363777A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/26Snap-action arrangements depending upon deformation of elastic members
    • H01H13/36Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
    • H01H13/38Single blade moved across dead-centre position

Abstract

1363777 Toggles; spring units; power-storing springs INTERNATIONAL BUSINESS MACHINES CORP 21 Aug 1972 [24 Sept 1971] 38856/72 Headings F2K and F2S [Also in Division H1] A toggle mechanism for a capacitive electrical switch comprises a bowed leaf spring 2 pivotally connected at its ends 4, in axial compression, between the arms of a U-shaped blade spring 3, the leaf spring 2 and blade spring 3 being respectively connected to a plunger 1 and capacitive plate 5, or vice-versa (Fig. 4, not shown), of the switch such that downward pressure applied to a keytop 7 fast with the plunger 1 straightens the toggle leaf spring 2 until an over-centre snap action is effected to lift the plate 5. Preferably plate 5 operates as one plate of a capacitive element, for connecting capacitively two dielectrically insulated conductors, and consists of a single moulded piece of high dielectric plastics. Alternatively conductive electrical contacts could be used in place of capacitive contacts. The plunger 1, toggle springs 2, 3 and plate 5 are contained in a casing 6 internally formed with projections 9 against which, on actuation of the switch, the rising plate 5 strikes to limit its upward movement and produce an acoustic signal to notify the operator that actuation of the mechanism is complete, and provide a fixed electrical minimum capacitance to give a fixed electrical base for interpreting signals. A plunger return spring 8 is provided to automatically effect reverse snap action of the switch after depression of the plunger 1 by the operator.
GB3885672A 1971-09-24 1972-08-21 Toggle mechanism Expired GB1363777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18358371A true 1971-09-24 1971-09-24

Publications (1)

Publication Number Publication Date
GB1363777A true GB1363777A (en) 1974-08-14

Family

ID=22673431

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3885672A Expired GB1363777A (en) 1971-09-24 1972-08-21 Toggle mechanism

Country Status (5)

Country Link
JP (1) JPS4841277A (en)
DE (1) DE2246714A1 (en)
FR (1) FR2153311B1 (en)
GB (1) GB1363777A (en)
IT (1) IT964141B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5628928B2 (en) * 1973-12-13 1981-07-04
JPS5524457B2 (en) * 1973-12-20 1980-06-28
JPS5444040B2 (en) * 1974-06-20 1979-12-24
JPS5520021Y2 (en) * 1974-09-27 1980-05-13
JPS5321712B2 (en) * 1974-11-27 1978-07-04
JPS5379372U (en) * 1976-12-04 1978-07-01
JPS6136778B2 (en) * 1979-05-29 1986-08-20 Daiafoil

Also Published As

Publication number Publication date
JPS4841277A (en) 1973-06-16
FR2153311A1 (en) 1973-05-04
IT964141B (en) 1974-01-21
DE2246714A1 (en) 1973-03-29
FR2153311B1 (en) 1975-03-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees