Drive assembly for a video recorder playback machine.

摘要

A drive assembly for a video recorder-playback machine is provided for controlled linear translation of an optics carriage (30) including an optical record-playback head (34) in a radial direction with respect to a video information disc (14). The optics carriage is mounted for radial displacement along a linear track assembly, and is connected to a sleeve-type push block (46) received about a precision lead screw (48). The push block is biased by a spring (66) axially toward a floating center coupling (54) which in turn couples the push block with limited axial misalignment against rotation with respect to a lead screw nut (52). Rotation of the lead screw causes axial translation of the lead screw nut for effecting corresponding linear translation of the push block and the optics carriage.