A sheet conveying apparatus includes a rotating member to covey a sheet and a drive transmission having a first, gear in a first engaging portion, a second gear in a second engaging portion, and an urging member. In a state where the first engaging portion and the second engaging portion are engaged with each other and the first gear is rotating in a first direction, a first surface of the first engaging portion transmits a driving force of a driving source from the first gear to the second gear. The first surface is inclined so that either engaging portion can retract, in the direction against the urging force of the urging member, to disengage with the other engaging portion while the first engaging portion rotates. A direction of twist of helical teeth in the first gear is configured to generate an axial force with respect to the urging direction.