US Patent No. 9,482,200

STARTER


Patent No. 9,482,200
Issue Date November 01, 2016
Title Starter
Inventorship Tomohiko Ikemori, Kiryu (JP)
Hiroshi Ooka, Kiryu (JP)
Masaaki Oya, Kiryu (JP)
Masataka Odagiri, Kiryu (JP)
Shigehiro Kanbe, Kiryu (JP)
Hiroki Yamada, Kiryu (JP)
Seiji Shimada, Utsunomiya (JP)
Yusuke Fukada, Shioya-gun (JP)
Takayuki Yamagata, Utsunomiya (JP)
Masahiro Nakamura, Sakura (JP)
Assignee Mitsuba Corporation, Kiryu-shi (JP) Honda Motor Co., Ltd., Tokyo (JP)

Claim of US Patent No. 9,482,200

1. A starter comprising: an output shaft configured to rotate by receiving a rotating force of a motor; a pinion mechanism
slidably provided on the output shaft, the pinion mechanism configured to be linkable with a ring gear of the engine and configured
to transfer the rotation of the output shaft to the ring gear; and an electromagnetic equipment configured to supply and cutoff
power to the motor, the electromagnetic equipment configured to bias a pressing force on the pinion mechanism toward the ring
gear, wherein the pinion mechanism comprises: a pinion inner provided on an outside of the output shaft and being slidable
along the output shaft; a pinion provided concentrically with the pinion inner outward in a radial direction and capable of
meshing with the ring gear; and a pinion spring disposed between the pinion and the pinion inner to bias the pinion toward
the ring gear, wherein the pinion is formed with a pinion-side helical external teeth which has a twisting angle and is capable
of meshing with the ring gear and a pinion-side helical internal teeth which has a twisting angle and is capable of meshing
with the pinion inner, wherein the pinion inner is formed with a pinion inner-side helical external teeth which has a twisting
angle and is capable of meshing with the pinion side helical internal teeth, wherein the pinion-side helical external teeth
is configured such that, upon when the ring gear meshes with the pinion, a thrust load is generated on the pinion in a direction
away from the ring gear when the rotating speed of the pinion is lower than that of the ring gear, and upon when the ring
gear meshes with the pinion, the thrust load in a direction approaching to the ring gear is generated on the pinion when the
rotating speed of the pinion is higher than that of the ring gear, wherein the pinion-side helical internal teeth and the
pinion inner-side helical external teeth are configured such that, upon when the ring gear meshes with the pinion, a thrust
load in a direction approaching to the ring gear is generated on the pinion when the rotating speed of the pinion is lower
than that of the ring gear, and wherein, upon when the ring gear meshes with the pinion, the thrust load in a direction away
from the ring gear is generated on the pinion when the rotating speed of the pinion is higher than that of the ring gear.