To provide a nest type drive unit for an adjustable furniture component constituted with a small dimension as small as possible, increased in the traveling speed of an output member connected to the furniture component at least twice a known nest type drive unit, and prevented from being unexpectedly transferred by improving the nest type drive unit having at least two rotatable spindles, the first spindle of these spindles being connected to a drive unit so as to be rotatable, and the second spindle or a plurality of other spindles being constituted to be additively longitudinally movable.

All spindles 11 and 13 are connected through a bringing member 14 in such a manner as to be rotatable at the same rotating speed in the same rotating direction.