Outboard motor
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYoshihiko Okabe
Life of this patent
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Abstract
An outboard motor includes an electric motor, a drive shaft, a propeller, a propeller shaft, a cooling water flow path, a water pump including an impeller and a pump shaft, a first gear mechanism, and a second gear mechanism. The first gear mechanism includes a first gear to rotate together with the drive shaft and a second gear to mesh with the first gear and rotate together with the propeller shaft. The second gear mechanism includes a third gear, different from the first gear, to rotate together with the drive shaft, and a fourth gear to mesh with the third gear and rotate together with the pump shaft.
Claims19
An outboard motor to be mounted on a hull, the outboard motor comprising:
- a drive unit;
- a drive shaft to be rotationally driven by the drive unit;
- a propeller;
- a propeller shaft to rotate together with the propeller;
- a cooling water flow path through which cooling water flows;
- a water pump including an impeller and a pump shaft to rotate together with the impeller to pump the cooling water into the cooling water flow path;
- a first gear mechanism to transmit rotation of the drive shaft to the propeller shaft;
- and
- a second gear mechanism to transmit rotation of the drive shaft to the pump shaft;
- wherein
- the first gear mechanism includes:
- a first gear to rotate together with the drive shaft;
- and
- a second gear to mesh with the first gear and rotate together with the propeller shaft;
- and
- the second gear mechanism includes:
- a third gear, different from the first gear, to rotate together with the drive shaft;
- and
- a fourth gear to mesh with the third gear and rotate together with the pump shaft.
Dependencies are inferred from the claim text.