Outboard motor and damper for propeller unit
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsJunya Onoue, Toshio Suzuki, Kenji Yukishima, Noriyuki Natsume, Manabu Yamamoto, Koma Ariga, Shunsuke Yukawa
Life of this patent
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Abstract
In an outboard motor, a damper includes a bushing fixed to a periphery of a propeller shaft. The damper includes a second pressing surface that presses a first pressing surface of an inner surface of a cylinder in a circumferential direction, an elastic member disposed around a portion of the bushing different from the second pressing surface of the bushing, and a reinforcer disposed between the first pressing surface and the second pressing surface.
Claims20
An outboard motor comprising:
- a propeller shaft;
- and
- a propeller unit disposed on the propeller shaft and including:
- a damper disposed around the propeller shaft;
- a cylinder including a first pressing surface on an inner surface thereof, and that is disposed around the damper and engages with the damper;
- and
- a blade disposed radially outward of the cylinder;
- wherein
- the damper includes:
- a bushing fixed to a periphery of the propeller shaft and including a second pressing surface that presses the first pressing surface of the cylinder in a circumferential direction;
- an elastic member disposed around a portion of the bushing different from the second pressing surface of the bushing in an axial direction and that elastically and deformably engages with the inner surface of the cylinder;
- and
- a reinforcer provided separately from the bushing and disposed between the first pressing surface and the second pressing surface.
A damper for a propeller unit including a cylinder disposed around a propeller shaft and including a first pressing surface on an inner surface thereof, and a blade disposed radially outward of the cylinder, the damper comprising:
- a bushing fixed to a periphery of the propeller shaft and including a second pressing surface that presses the first pressing surface of the cylinder in a circumferential direction;
- an elastic member disposed around a portion of the bushing different from the second pressing surface of the bushing in an axial direction and that elastically and deformably engages with the inner surface of the cylinder;
- and
- a reinforcer provided separately from the bushing and disposed between the first pressing surface and the second pressing surface.
Dependencies are inferred from the claim text.