Patent ID: 7652407

Claim:
A driving device comprising: an electro-mechanical transducer having first and second end portions opposite to each other in an expansion/contraction direction; a static member coupled to the first end portion of said electro-mechanical transducer; a vibration friction portion coupled to the second end portion of said electro-mechanical transducer, said vibration friction portion having a V-shaped groove in cross section; a rod-shaped moving portion frictionally coupled to said vibration friction portion, said rod-shaped moving portion being movable in the expansion/contraction direction of said electro-mechanical transducer; an urging arrangement, fixed to said vibration friction portion, for urging said rod-shaped moving portion against said vibration friction portion at the V-shaped groove thereof; an outer sheath for covering said driving device; and an attitude retaining arrangement for retaining an attitude of said driving device with respect to said outer sheath.