Contact terminal structure

[Problem] To provide a contact terminal structure having excellent durability, which is not susceptible to increase in the contact resistance even if on/off operations are repeated in cases where the contact terminal structure is applied to a movable contact terminal. [Solution] A contact terminal s...

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Bibliographic Details
Main Authors SUMIYA YOSHINORI, SEGAWA ISAO
Format Patent
LanguageEnglish
Published 27.01.2016
Subjects
ALLOYS
BASIC ELECTRIC ELEMENTS
CABLES
CHEMISTRY
CONDUCTORS
CURRENT COLLECTORS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
FERROUS OR NON-FERROUS ALLOYS
INSULATORS
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
LINE CONNECTORS
METALLURGY
PERFORMING OPERATIONS
RELAYS
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
SELECTORS
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:[Problem] To provide a contact terminal structure having excellent durability, which is not susceptible to increase in the contact resistance even if on/off operations are repeated in cases where the contact terminal structure is applied to a movable contact terminal. [Solution] A contact terminal structure which is characterized by being obtained by forming a first plating layer on the surface of the base and forming a second plating layer, which serves as the outermost layer, on the surface of the first plating layer. This contact terminal structure is also characterized in that: the first plating layer is formed of a silver tin alloy; the second plating layer is formed of silver or an alloy mainly composed of silver; and the hardness of the first plating layer is larger than the hardness of the second plating layer. The first plating layer has a Vickers hardness of 250-400, and the second plating layer has a Vickers hardness of 80-200.
Bibliography:Application Number: CN2014833657