Patent ID: 7530280

Claim:
A micro actuator comprising: a case; a translationally driving section having a moving portion mounted on said case for translational movement; and a displacement enlarging member including a first side portion having a first end portion connected to said case, a second side portion having a second end portion connected to said moving portion of said translationally driving section, and a distal end portion, said first and second side portions respectively extending from said first and second end portions and being in direct contact with each other to form a common portion, wherein the second side portion is provided in proximity to the first side portion, wherein said first and second side portions extend in a moving direction of said moving portion in a relaxed position, and an entire portion of said first side portion, that extends from said common portion to said first end portion, is straight in the relaxed position, wherein, as said second end portion is pulled on the basis of the translational movement, an amount of displacement of said distal end portion is enlarged more than an amount of the translational movement by a buckling phenomenon and said first side portion is elastically bent, and said first side portion is made of a material that is different from a material of said second side portion.