| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively provide a plate spring and a lens drive mechanism each having improved impact resistance. SOLUTION: The plate spring 22 comprises an annular inner periphery side end part 221, an outer periphery side end part 222 isolated from the inner periphery side end part and having a larger radius than the inner periphery side end part, N-pieces of arm parts 223 provided along the peripheral direction for connecting the inner periphery side end part to the outer periphery side end part, N-pieces of inner periphery side connection parts 224 protruded from the inner periphery side end part to the radial outside for connecting the inner periphery side end part to the N-pieces of arm parts, and N-pieces of outer periphery side connection parts 225 protruded from the outer periphery side end part to the radial inside for connecting the outer periphery side end part to the N-pieces of arm parts. At least one of a plate width (a) of an inner periphery side root portion 223a of the arm part 223 and a plate width (b) of an outer periphery side root portion 223b is greater than a plate width (c) of a longitudinal center portion 223c of the arm part 223. COPYRIGHT: (C)2009,JPO&INPIT
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