| 摘要 |
A transmission device wherein a first transmission part (A) and a second transmission part (B) are formed. The first transmission part is configured by means of at least: an eccentric shaft (2) having a main shaft part (2a) on a first rotational axis line (X1) and an eccentric shaft part (2b) on a second rotational axis line (X2) eccentric to the first rotational axis line; an eccentric body (3) that is rotatably supported on the eccentric shaft part, is capable of revolving around the first rotational axis line while rotating around the second rotational axis line, and on outer peripheral part of which there are external teeth (3a); and a housing (1) having an axial center on the first rotational axis line, and having, on an inner peripheral wall, internal teeth (1f) that mesh with the external teeth (3a) of the eccentric body. The second transmission part is configured by means of at least: cycloid grooves (10, 11) respectively formed on one side surface (3b) of the eccentric body and one side surface (4a) of a rotating body (4) opposing the eccentric body; and rolling bodies (13) sandwiched between these cycloid grooves and moving along a trajectory defined by these cycloid grooves. |
