| 摘要 |
PROBLEM TO BE SOLVED: To surely restrain a pinion gear from being unexpectedly disengaged from a ring gear.SOLUTION: A starter includes a motor part 3, a drive shaft 4 rotating upon receiving rotating force of the motor part 3, a transmission gear 70 provided on the drive shaft 4 to be slidably movable, an idle shaft 102 extended in parallel to the drive shaft 3 and disposed so as to rotate around a center axis and slidably move in the center axis direction in cooperation with slide movement of the transmission gear 70, an idle gear 101 disposed on one end side in the axial direction of the idle shaft 102 and helically meshed with the transmission gear 70, and a driving gear 110 disposed on the other end side in the axial direction of the idle shaft 102 and capable of being helically meshed with a ring gear 23 of an engine. A helix direction of the driving gear 110 capable of being helically meshed with the ring gear 23 and a helix direction of the idle gear 101 helically meshed with the transmission gear 70 are set in a same direction. |
