| 摘要 |
<p>An engine starter having an axially stationary overrun clutch comprises an electrical motor having an armature shaft with a central gear formed thereon. The central gear engages a reduction gear unit having a plurality of planetary gears and an orbital gear. The planet gears are supported by gear pins fixedly secured to a clutch shell of an overrun clutch. The overrun clutch further includes a clutch inner having two sides contained within the clutch shell. One side of the clutch inner includes an armature joint for receiving an end of the armature shaft. An overrun shaft extends from another side of the clutch inner coaxial with the armature shaft. The short overrun shaft includes a helical spline gear formed on an outer shaft surface. A stop bolt extends coaxially from the short overrun shaft. A drive shaft comprising a cylinder with an inner circumference having helical splines is slidably joined to the short overrun shaft and the stop bolt. A shift lever having one end cooperating with a solenoid and another end engaging the drive shaft is capable of sliding the drive shaft in a forward direction along the overrun shaft and stop bolt. Sliding movement of the drive shaft along the helical spline gear imparts axial and rotational movement to the drive shaft relative to the clutch inner. A pinion is disposed upon the drive shaft for engagement with an engine ring gear when the drive shaft is moved to a forward position.</p> |
