GEAR SUPPORTING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To suppress the partial wear of gears by keeping a ring gear in constant engagement with other gears. SOLUTION: This gear supporting structure comprises: the ring gear 20; a driving gear 16 engaging with the ring gear for rotationally driving the ring gear; a plurality of output gears 19 engaging with the ring gear for rotationally driving a plurality of output shafts, respectively; a casing storing the ring gear, the driving gear and the output gears; and rolling elements 21 arranged on the side faces of the output gears rotatably relative to the output shafts. The rolling elements have portions contacting part of the ring gear for supporting the ring gear via the portions. COPYRIGHT: (C)2009,JPO&INPIT