| 摘要 |
PROBLEM TO BE SOLVED: To reduce a size of a structure to transmit rotary driving force from a plurality of driving sources. SOLUTION: A power transmission device 126 is quipped with a round bar-shaped axial rod 128, a first rotating member 130 with gears 130b, 130c fixed on both ends of a sleeve (a cylindrical member) 130a, a second rotating member 132 with gears 132b, 132c fixed on both ends of a sleeve 132a, and a third rotating member 134 with two gear parts 134a, 134b of different diameters formed concentrically. The rotating members are provided in numerous concentric layers and rotate independently around a common rotation axis line Y1. Consequently, the rotary driving force from the plurality of the driving sources is independently transmitted to the corresponding objects to be driven by having the gears 130c, 132c and the gear part 134b engaging with respectively corresponding output shaft gears of motors as the driving sources, and by having the gears 130b, 132b and the gear part 134a engaging with respectively corresponding gears moving in conjunction with objects to be driven. COPYRIGHT: (C)2005,JPO&NCIPI
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