Shape memory alloy actuator

A shape memory alloy (SMA) actuator for use in a device comprising a static portion 2, 3 and a moveable portion 1 comprises an SMA wire 5" which is connected between the static portion 2 and the moveable portion 1 and which is arranged, by contraction, to drive movement of the moveable portion....

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Bibliographic Details
Main Authors Andrew Benjamin Simpson Brown, Jonathan Morgan, Eugene Yu Jen Ho
Format Patent
LanguageEnglish
Published 19.10.2022
Subjects
BLASTING
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MECHANICAL ENGINEERING
MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
PRODUCING MECHANICAL POWER
SPRING, WEIGHT, INERTIA OR LIKE MOTORS
WEAPONS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Summary:A shape memory alloy (SMA) actuator for use in a device comprising a static portion 2, 3 and a moveable portion 1 comprises an SMA wire 5" which is connected between the static portion 2 and the moveable portion 1 and which is arranged, by contraction, to drive movement of the moveable portion. A strain relief mechanism comprising a sprung crimp 7" is connected to the SMA wire, and may protect the SMA wire from excessive stress caused by high temperature or, for example, by shock loads. The moveable portion 1 may be a haptic button.
Bibliography:Application Number: GB20220010121