| 摘要 |
<p>A motorized wheel hub assembly includes a sealed motor section having first (68) and second (92) coaxial shafts (72) extending from the motor section, the second shaft being a rotary shaft and a gear reduction section adjacent to the motor section, the gear reduction section including a pinion (122) at the end of the rotary shaft, a plurality of planet gears (114) rotatably mounted to the housing in meshing engagement with the pinion (122) and a third shaft (72) connected to the motor housing, all of the shafts being separate but coaxial. A hub (26) having an interior surface closely surrounds the motor and gear reduction sections and is rotably coupled to the first and third shafts. A ring gear (136) formed in the interior surface of the hub is in meshing engagement with the planet gears so that when the second shaft rotates at a selected speed, the hub rotates relative to the first and third shafts at a lesser speed. Preferably, the hub is partially filled with oil to conduct heat from the motor section to the outside.</p> |
