Compact belted strain wave gear apparatus and a vehicle lifting system including the compact belted strain wave gear apparatus

A wave gear apparatus comprising:

• a spline having a top surface, a bottom surface, an exterior surface, and an interior surface with said top surface and said bottom surface being axially spaced from one another and said exterior surface and said interior surface extending annularly about a center axis and between said top surface and said bottom surface, with a plurality of spline teeth extending from said interior surface toward said center axis;
• a wave generator rotatably disposed in said spline and including an eccentric core;
• a belt assembly extending about said wave generator, said belt assembly including a backing sleeve and a ring-shaped substrate defining a plurality of belt teeth extending radially outwardly for engaging said spline teeth, whereby a total number of said belt teeth is less than a total number of said spline teeth;
• a bearing assembly disposed between said wave generator and said belt assembly;
• and
• an output member engaging said belt assembly and defining a recess receiving said wave generator and said belt assembly.

A wave gear apparatus comprising:

• a spline having a top surface, a bottom surface, an exterior surface, and an interior surface with said top surface and said bottom surface being axially spaced from one another and said exterior surface and said interior surface extending annularly about a center axis and between said top surface and said bottom surface, with a plurality of spline teeth extending from said interior surface toward said center axis;
• a wave generator rotatably disposed in said spline and including an eccentric core, the eccentric core defining an indentation;
• a belt assembly extending about said wave generator, said belt assembly including a ring-shaped substrate defining a plurality of belt teeth extending radially outwardly for engaging said spline teeth, whereby a total number of said belt teeth is less than a total number of said spline teeth;
• a cladding sleeve surrounding the eccentric core of the wave generator, the cladding sleeve including a protrusion configured to engage the indentation in the eccentric core for preventing relative rotation between the eccentric core and the cladding sleeve;
• a bearing assembly disposed between said cladding sleeve and said belt assembly;
• and
• an output member engaging said belt assembly and defining a recess receiving said wave generator and said belt assembly.