DRIVING FORCE TRANSMISSION DEVICE AND IMAGE FORMING APPARATUS USING THE SAME

摘要

A driving force transmission device that transmits a driving force to a rotation body includes 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.

主权项

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 thrush 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.