Height adjustment for front seat in vehicle has a geared drive with variable length drive arm connected to a lifting arm between a floor mounting and the seat support frame

摘要

A height adjustment for a front seat in a vehicle has the seat frame secured to the floor mountings (5) by pivot mounted arms. At least one of the rear mounted pivot arms (11) is coupled to a variable length drive arm (39) via a pin and slot coupling with the drive arm connected to a drive gear (31) operated by a manual control or by a servo motor. The drive mechanism provides a minimum of drag and a variable mechanical advantage.