Outboard Motor Planetary Gear Layout for Steering Torque Balance

The patent applies preliminary anti-action by introducing a counter-torque mechanism that generates a torque opposite to the rotation direction of the lower drive shaft. This counter-torque actively counteracts the torque applied to the lower case from the propeller shaft, preventing the lower case from rotating and eliminating the need for continuous electric power to maintain the steering angle.

The patent uses an intermediary mechanism (the counter-torque generation system) to transfer and balance torques. The intermediary mechanism includes components such as the sun gear, planetary gears, and internal gear that work together to generate the counter-torque, acting as a mediator between the drive shaft and the lower case to achieve torque balance.

The patent applies the nested doll principle by placing the planetary gear mechanism inside the upper case, which itself is contained within the overall outboard motor structure. The planetary gear mechanism includes nested components where planetary gears are arranged around the sun gear, and the internal gear encompasses the planetary gears, creating a compact nested arrangement that reduces the volume of the lower case.

The patent utilizes dimensional arrangement by configuring the planetary gear mechanism in a three-dimensional space within the upper case. The sun gear, planetary gears, and internal gear are arranged in different spatial dimensions, allowing efficient use of space and achieving compactness while managing structural complexity through spatial optimization.