| 摘要 |
PROBLEM TO BE SOLVED: To provide an eccentric oscillation type speed reducer capable of restricting disadvantage occurring when a motor shaft having a tapered shape outer peripheral part is connected.SOLUTION: This invention relates to an eccentric oscillation type speed reducer G1 comprising first to third external tooth gears 22 to 24 oscillated by first to third eccentric bodies 14 to 16 arranged on an input shaft 12 (an eccentric body shaft), and an internal tooth gear 26 to which the first to third external tooth gears 22 to 24 are internally contacted and engaged while they are oscillated, and used while being connected to a motor shaft 10 having a tapered outer peripheral part 10A. The input shaft 12 has at its inner periphery a tapered hollow part 12A that can be connected in friction to the tapered outer peripheral part 10A, first and second ball bearings 61 and 62 supporting the input shaft 12 are assembled into the reducer under a state in which the input shaft 12 can be axially moved and O-rings 82, 84, 86 and 88 are arranged at the outer peripheries of outer rings 61B and 62B of the first and second ball bearings 61 and 62. |
