Linear vibration motor, and portable electronic device provided with said linear vibration motor

A linear vibration motor comprising:

• a movable element integrally comprising:
• a magnet portion, a weight portion, and a shaft;
• a frame containing the movable element so as to enable reciprocating motion along an axial direction;
• a coil driving, along the axial direction, the magnet portion, which is secured to the frame;
• an elastic member applying, to the movable element, an elastic force repelling a driving force applied to the magnet portion;
• and
• a bearing secured to the frame, wherein:
• the shaft is provided extending in one direction along the axial direction, with a tip end thereof as a free end, and the bearing, slidably supporting the free end of the shaft,
• the weight portion has a recessed portion recessed along the axial direction, wherein the shaft and the bearing are arranged in a space within the recessed portion,
• the bearing is formed in a cylindrical shape, and is secured to an end wall portion of the frame facing the shaft, and the shaft is inserted to be supported therein, and
• the bearing comprises an interior formed in a through hole shape, wherein the spacing between the tip end of the shaft on one side thereof and the end wall portion of the frame is no less than a maximum amplitude of a one side of the movable element, in an unpowered state.