| 摘要 |
A harmonic speed changer mechanism includes a circular spline having an outer surface formed with a gear, a flexible spline having an outer surface formed with a gear whose number of teeth is larger than that of the circular spline and arranged outside the circular spline and a wave generator having an inner wall defining an ellipsoidal cross section and arranged outside the flexible spline. The flexible spline is deformed by the ellipse defined by the inner wall of the wave generator so that the gear of the flexible spline meshes with the circular spline gear, partially. A space is provided along an axis of the harmonic speed changer, which is enough to receive various external components necessary for a utilization device to which the harmonic speed changer is applied.
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