Lens driving device and electronic equipment

A lens driving device, comprising:

• a motor fixed to a plate;
• a lead screw connected to the motor to be rotated about an axial line thereof;
• a nut threadingly engaged with the lead screw;
• a convex protruding portion formed to protrude outward from an outer peripheral surface of the nut;
• a casing fixed to the plate, for housing the lead screw and the nut;
• a fitting groove linearly formed in the casing in a direction of the axial line, for fitting the protruding portion in the fitting groove so as to regulate rotation of the nut, and movably guiding the protruding portion in a fitted state in the direction of the axial line to move the nut back and forth along the lead screw;
• and
• a lens frame, comprising:
• a lens holding portion for holding a lens;
• and
• an abutting portion abutting the nut,
• the lens frame being supported on the casing so as to move in the direction of the axial line and to move in accordance with back-and-forth movement of the nut to move the lens back and forth in the direction of the axial line,
• wherein at least one of the casing and the protruding portion has a tapered surface formed so as to forcibly guide the protruding portion toward the fitting groove to gradually change to the fitted state when the casing and the plate are combined together.