Patent ID: 7647806

Claim:
A drive for operating a movable part with respect to a fixed part, comprising: a driving member having a linear shape and being made of a shape-memory alloy; a crimp terminal for holding one end of said driving member at said fixed part or said movable part, said crimp terminal having a pair of sandwiching parts formed by bending a plate member, said driving member being sandwiched and crimped by said pair of sandwiching parts in a width w of said plate member along a stretch direction of the driving member in a portion where said pair of sandwiching parts face each other, and at least a part to which said driving member is crimped in said crimp terminal being made of stainless steel; and a driving circuit for operating said movable part by applying a driving current to said driving member through said crimp terminal, wherein the width w of said plate member satisfies the following equation: w>Pm /(2 ·μ·D·J ), where Pm denotes a maximum driving force of said driving member, μ denotes a coefficient of static friction between said plate member and said driving member, D denotes a diameter of said driving member, and J denotes proof stress of said plate member.