Patent ID: 8904896
Filing Date: 2014-12-09
Classification: E02F,F16H,Y10T

Abstract:
1. A gear device comprising: a gear including an opening in a center part thereof; a roughly cylindrical pin inserted along and into the opening of the gear, the pin being a rotational center of the gear; a roughly annular plate member disposed on a face of the gear and attached along and onto an outer peripheral surface of the pin; a retainer portion disposed in a vicinity of an end portion of the pin, with the plate member being interposed between the retainer portion and the face of the gear; a contact part formed by faced surfaces of the retainer portion and the plate member facing in an axial direction of the pin with parts of the faced surfaces annularly making contact with each other in a position closest to an outer peripheral surface of the pin; a non-contact part formed by the faced surfaces of the retainer portion and the plate member with parts of the faced surfaces not making contact with each other in a position away from the outer peripheral surface of the pin; the retainer portion being a flanged portion integrally formed with the end portion of the pin, the flanged portion protruding outwards in a radial direction of the pin; and the pin including a thermally processed hardened layer in a region of the flanged portion including the faced surface that faces the plate member.