Mitsuba Corporation

Honda Motor Co., Ltd.

Masaaki Oya

Tomohiko Ikemori

Hiroshi Ooka

Shigehiro Kanbe

Masataka Odagiri

Hiroki Yamada

Mitsuhiro Kogure

Yusuke Fukada

Seiji Shimada

Masahiro Nakamura

Satoshi Sekiguchi

Masaki Ishizeki

Chihiro Horikoshi

Takayuki Yamagata

Ken Noguchi

Koki Honda

A starter () includes a motor unit (), an output shaft () configured to receive a rotational force of the motor unit () and rotate, a pinion gear () (a pinion mechanism) helically engageable with a ring gear () of an engine, a clutch mechanism () configured to transmit the rotational force of the output shaft () to the pinion gear (), and an electromagnetic device () configured to bias a pressing force toward the ring gear () to the clutch mechanism () and the pinion gear (), wherein a plunger spring () (a backlash absorption mechanism) configured to bring one end () (a point of action) of a plunger inner part () in constant elastic contact with the clutch mechanism () is installed at the electromagnetic device ().

Starter

A starter includes a motor unit, a drive shaft configured to receive a rotational force of the motor unit and rotate, a transmission pinion gear installed on the drive shaft, an idle shaft extending in a direction parallel to the drive shaft, an idle gear installed on the idle shaft and configured to mesh with the transmission pinion gear, a driving pinion gear installed on the idle shaft and configured to mesh with a ring gear of an engine, a gear cover configured to rotatably support portions of the drive shaft and the idle shaft and accommodate the transmission pinion gear and the idle gear, and a bracket section installed between the motor unit and the gear cover and configured to rotatably support a first end in an axial direction of the idle shaft.

Formed in a pinion () are pinion-side helical external teeth (A) that mesh with a ring gear), and pinion-side helical internal teeth () that mesh with a pinion inner (). Formed in the pinion inner () are pinion inner-side helical external teeth () that mesh with the pinion-side helical internal teeth (). The configuration is formed so that when the rotational speed of the pinion () is slower than that of the ring gear (), a thrust load is generated in a direction toward the ring gear (), and when the rotational speed of the pinion () is faster than that of the ring gear (), a thrust load is generated in a direction away from the ring gear ().

A starter includes an output shaft which rotates by a rotary force applied from the motor unit, a housing in which an end of the output shaft is rotatably supported, and an electromagnetic device configured to apply/shut off current to the motor unit, and biases a suppressing force toward the ring gear to the pinion gear through a clutch mechanism, wherein a load receiving member which abuts one end of the output shaft to receive an axial load generated from the output shaft is installed in the housing.

Growing community of inventors

Kiryu, Japan

Masaaki Oya