Tape measure reel has planet gearbox with teeth inside cylinder fixed to housing wall with sun gear fixed to reel and spring drive fixed to carrier center

摘要

A tape measure reel has a planet gearbox with teeth (37) inside a cylinder (51) fixed to the housing wall (1.1) engaged by planet gears (39) in a planet carrier (38) and sun gear (11) fixed to the reel (2) rotating in the cylinder with spring (6) fixed to the carrier center with inner end in a slit in the spring armature (8).