| 摘要 |
<p>A marine propulsion device (1) includes a motive force transmission system (4), a propeller shaft (15), a housing section (2), and a clutch. The motive force transmission system (4) includes a crank shaft (11) and a drive shaft (12) which transmits motive force from the crank shaft (11). The propeller shaft (15) transmits motive force from the drive shaft (12). The housing section (2) houses the motive force transmission system (4). The clutch is attached between the motive force transmission system (4) and the housing section (2). The clutch permits relative rotation between the motive force transmission system (4) and the housing section (2) by opening a connection between the motive force transmission system (4) and the housing section (2) during normal rotation of the motive force transmission system (4). The clutch suppresses relative rotation between the motive force transmission system (4) and the housing section (2) by connecting the motive force transmission system (4) and the housing section (2) during reverse rotation of the motive force transmission system (4).</p> |
