Starting device of engine
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsHirotsugu Oga, Mamoru Atsuumi
Life of this patent
Estimating the term…
Abstract
In a starting device of an engine, a starter clutch is provided with an outer race that rotates with a rotor (starter member), and a cam interposed between the outer race and a starter gear. A through hole is formed in the rotor so as to face the outer race axially. A stepped section is provided between a radially outer portion of the outer race, the portion facing a radially outer edge of the through hole, and a radially inner portion of the outer race. The stepped section causes the radially outer portion to be thinner than the radially inner portion. The starting device is capable of ensuring a cooling capability of a stator coil even though the rigidity of the outer race is increased.
Claims21
A starting device of an engine, comprising:
- a starter gear driven by a starter motor;
- a starter member connected to an engine starting shaft, the engine starting shaft defining an axial direction of the starting device;
- and
- a starter clutch located between the starter member and the starter gear to transmit rotary motion from the starter gear only to a side of the starter member;
- wherein
- the starter clutch is provided with an outer race that rotates with the starter member, and a clutch member interposed between the outer race and the starter gear;
- the starter member has a through hole formed therein so as to oppose the outer race in the axial direction;
- a stepped section is defined between a radially outer portion of the outer race which faces a radially outer edge of a periphery of the through hole and a radially inner portion of the outer race which is in contact with the clutch member;
- and
- the stepped section defines a contour of the outer race such that the radially outer portion of the outer race is thinner in the axial direction than the radially inner portion of the outer race.
A starting device of an engine, comprising:
- a starter gear driven by a starter motor;
- a starter member connected to an engine starting shaft, the engine starting shaft defining an axial direction of the starting device;
- and
- a starter clutch located between the starter member and the starter gear to transmit rotary motion from the starter gear only to a side of the starter member;
- wherein
- the starter clutch is provided with an outer race that rotates with the starter member, and a clutch member interposed between the outer race and the starter gear;
- the starter member has a through hole arranged to oppose the outer race in the axial direction;
- a cut-out section is defined between a radially outer portion of the outer race which faces a radially outer edge of a periphery of the through hole and a radially inner portion of the outer race that is in contact with the clutch member;
- and
- the cut-out section defines a contour of the outer race such that the radially outer portion of the outer race is thinner in the axial direction than the radially inner portion of the outer race.
Dependencies are inferred from the claim text.