A reel assembly of the invention includes a first elastic member capable of axial and circumferential deformation at the joint between a motor shaft and a reel. A motor exerts torque on the reel through circumferential deformation of the first elastic member, which absorbs circumferential vibrations of the reel at a stop position. A fastening member coupled to the shaft includes a second elastic member capable of axial deformation. The fastening member presses the second elastic member against the reel in the axial direction to secure the reel on the shaft and compress the first elastic member. The second elastic member absorbs axial vibrations of the reel at a stop position. When the first elastic member is made of elastomer, its circumferential elasticity varies with axial compressions, and accordingly, the circumferential elasticity is easy to optimize in order to absorb the circumferential vibrations of a reel of whatever size and weight.