| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-wheel motor drive device which uniformizes transmission torque for a plurality of curved plates. SOLUTION: The in-wheel motor drive is provided with: a speed reduction section which is equipped with several disc-shaped eccentric members that decenter from a rotational axis line of a motor side rotational member and connect with the motor side rotational member; several revolving members 26l, 26m, 26n that are supported by several eccentric members arranged in the axis line direction, respectively, and revolve around the rotational axis along with the rotation of the motor side rotational member; an outer periphery engaging member which is engaged with the outer periphery sections of the revolving members to generate the rotation movement of the revolving members; and an inner side engaging member 31 in a pin shape that is extended in parallel with the rotational axis line of which the root side is connected with a wheel side rotational member 28 and the tip side is connected with the revolving members to bring out the rotation movement of the revolving members. Inner pin collars 31b of the inner side engaging member are abutted on each of the several revolving members and are formed in such a way that an external diameter size Dl of the inner pin collars supported on the tip side is larger than an external diameter size Dn of the inner pin collar supported by the root side. COPYRIGHT: (C)2011,JPO&INPIT
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