Anlasser

摘要

The starter comprises a starter motor having an armature shaft; and drive shaft coaxial with the armature shaft, and a sun gear formed on an outer circumference of the armature shaft. Planetary gears are set on one end of the drive shaft and engaged with the sun gear. A speed reduction mechanism has an internal gear engaged with planetary gears. The overrunning clutch has a first cylinder portion disposed on the internal gear and extending in an axial direction, a second cylinder portion acting as a fixing side and set with a predetermined clearance relative to an inner circumference of the first cylinder portion, and a roller stored in a storage portion formed on the inner circumference of the first cylinder so that the roller does not contact an outer circumference of the second cylinder portion when the roller is stored in the storage portion.