| 摘要 |
PCT No. PCT/SE93/00549 Sec. 371 Date Feb. 1, 1995 Sec. 102(e) Date Feb. 1, 1995 PCT Filed Jun. 22, 1993 PCT Pub. No. WO94/00337 PCT Pub. Date Jan. 6, 1994.A boat propulsion unit adapted to be suspended on the outside of a boat transom and drivably connected to an engine on the inside of the transom. This unit comprising a propeller drive shaft housing, a suspension arrangement adapted to be fixedly secured to the transom, a pivot which pivotally connects the drive shaft housing to the suspension arrangement to allow pivotal displacement of the drive shaft housing relative to the suspension arrangement about a pivot axis in a vertical plane and pivot axis in a horizontal plane, a steering device which is arranged to effect pivotal displacement of the drive shaft housing about the first-mentioned axis, and a trim and tilt device which is arranged to effect pivotal displacement of the drive shaft housing about the second-mentioned axis. The pivot comprises a first lower and a second upper universal joint (22, 24 resp.), of which the upper universal joint carries a powered actuator member (35) inclined to the horizontal and comprising a pair of components (34, 37) which are telescopically displaceable relative to each other and of which one has a forked bracket (39) at an outer end, which bracket (39) grips an upper region (38) of the drive shaft housing (3) and is pivotally connected thereto for pivotal displacement about a horizontal pivot axis. The other component (34) of the actuator member (35) has an inner end at a distance from the upper universal joint, and at, or in the vicinity of, which end the other component has structure (42) for connecting the component to a steering mechanism, by which the actuator member is displaceable about a pivot axis (a) lying in a vertical plane, thereby to pivot the drive shaft housing relative to the suspension arrangement. |
