Patent ID: 9494906
Filing Date: 2016-11-15
CPC Classification: F16D,G03G

Claim Text:
1. A driving force transmission device that transmits a driving force to a rotation body, the device comprising: a flange member provided in the rotation body; a through shaft that is connected to the flange member to transmit the driving force to the rotation body via the flange member; and an intermediate transmission member that is provided in the through shaft to transmit the driving force to the flange member from the through shaft, wherein the flange member includes a coaxial level control hole that controls a coaxial level with the through shaft, a cylindrical portion that extends in an axis direction to control a squareness to the through shaft, a thrust portion that controls movement in the axis direction, and an internal gear having teeth extending in the axis direction, the through shaft includes a parallel pin pressed in a vertical direction of the shaft and a thrust member that controls a thrust direction of the rotation body by contact with the thrust portion, and the intermediate transmission member includes an external gear that engages with the internal gear, a driving force receiving groove that receives the driving force from the parallel pin pressed into the through shaft, and an inner diameter portion having a space relative to an outer circumference portion of the through shaft while being supported to move the through shaft in the axis direction.