Electronic device comprising motor for providing haptic feedback and changing size of display area of flexible display

An electronic device comprising:

• a housing including a first housing part and a second housing part movably coupled with the first housing part;
• a motor assembly disposed in the housing;
• and
• a gear assembly linked with the motor assembly to move the second housing part with respect to the first housing part according to a driving of the motor assembly, the gear assembly including a reducer,
• wherein the motor assembly includes:
• a first shaft including a first end coupled with the reducer and a second end opposite to the first end,
• a second shaft separated from the first shaft,
• a rotating member including (i) a magnet including a through hole accommodating the second shaft to rotate the second shaft based on power supplied to the motor assembly, and (ii) a fastening member attached to the magnet, the fastening member including a fastening hole configured to insert the second end of the first shaft, and
• a vibrator eccentric with respect to the second shaft, the vibrator being coupled to the second shaft to provide a haptic feedback based on rotation of the second shaft, and
• wherein the rotating member, by moving with respect to the first shaft, is configured to:
• provide an unfastened state in which the second end of the first shaft is separated from the fastening hole such that the second shaft is rotatable with respect to the first shaft, to provide the haptic feedback through the vibrator, and
• provide a fastened state in which the second end of the first shaft is inserted into the fastening hole such that the first shaft is rotatable with respect to the second shaft, to move the second housing part with respect to the first housing part.