Vessel propulsion apparatus
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsDaisuke NAKAMURA, Yoshihito FUKUOKA
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Abstract
A vessel propulsion apparatus includes a prime mover, a drive shaft, a pinion, a rear gear, a propeller shaft, a front bearing, a cylindrical front housing, and a cylindrical rear housing. The front housing surrounds the front bearing about a propeller axis and supports the rear gear via the front bearing in a manner rotatable about the propeller axis. The rear housing is disposed behind the front housing. The front housing surrounds the propeller shaft about the propeller axis and supports the propeller shaft at a position more rearward than the rear gear in a manner rotatable about the propeller axis.
Claims11
A vessel propulsion apparatus comprising:
- a prime mover;
- a drive shaft rotatable about a vertically-extending drive axis and arranged such that a rotation from the prime mover is transmitted to the drive shaft;
- a pinion arranged to rotate about the drive axis together with the drive shaft;
- a bevel gear arranged at a position more rearward than the drive axis and engaged with the pinion, the bevel gear being rotatable about a propeller axis extending in a front-rear direction;
- a propeller shaft rotatable about the propeller axis and arranged such that at least a portion of the propeller shaft is located at a position more rearward than the bevel gear and a rotation from the bevel gear is transmitted to the propeller shaft;
- a front bearing surrounding the bevel gear about the propeller axis and rotatably supporting the bevel gear about the propeller axis;
- a front housing surrounding the front bearing about the propeller axis and rotatably supporting the bevel gear about the propeller axis via the front bearing;
- and
- a rear housing disposed behind the front housing, the rear housing surrounding the propeller shaft about the propeller axis, the rear housing rotatably supporting the propeller shaft about the propeller axis at a position more rearward than the bevel gear.
Dependencies are inferred from the claim text.