US 12,000,470 B2
Compact belted strain wave gear apparatus and a vehicle lifting system including the compact belted strain wave gear apparatus
Dominique Fanelli, Bouffemont (FR); Dominique Pampirio, Argenteuil (FR); and Jocelyn Marchand, Levallois Perret (FR)
Assigned to BEIJINGWEST INDUSTRIES CO., LTD, Beijing (CN)
Filed by BeijingWest Industries Co., Ltd., Beijing (CN)
Filed on Jun. 26, 2022, as Appl. No. 17/849,695.
Application 17/849,695 is a continuation in part of application No. 16/894,702, filed on Jun. 5, 2020, granted, now 11,384,825.
Claims priority of provisional application 63/228,971, filed on Aug. 3, 2021.
Claims priority of provisional application 62/858,776, filed on Jun. 7, 2019.
Claims priority of application No. 202010472564.0 (CN), filed on May 29, 2020; and application No. 202210502380.3 (CN), filed on May 10, 2022.
Prior Publication US 2022/0356937 A1, Nov. 10, 2022
Int. Cl. F16H 49/00 (2006.01)
CPC F16H 49/001 (2013.01) [F16H 2049/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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 ring-shaped substrate defining a plurality of belt teeth extending radially outwardly and configured to engage 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 including a plurality of needles each extending parallel to the center axis; and
an output member engaging said belt assembly and defining a recess receiving said wave generator and said belt assembly.