Patent ID: 9115786
Filing Date: 2015-08-25
Classification: F16H,G03G,Y10T

Abstract:
1. A driving force transmitting device comprising: a first gear that is rotated by a rotational driving force transmitted from a driving force generating device, the first gear having a small wheel portion provided integrally in a root circle and rotating about the same rotational shaft as that of the small wheel portion; and a second gear that engages with the small wheel portion of the first gear and to which a rotational driving force is transmitted from the first gear, wherein: a rotation support member that rotatably supports the second gear is provided at a rotational center of the second gear; a first end portion of the rotation support member is disposed in a device main body of the driving force transmitting device, in the root circle of the first gear; and an annular rib member is provided on a web face of the first gear, the rib member having the same rotational shaft as the first gear and corotating with the first gear while supporting a second end portion of the rotation support member disposed in the device main body.