Patent ID: 8311450
Filing Date: 2012-11-13
Classification: G03G,Y10T

Abstract:
1. An end cover part which is used to close an end of a cylindrical body, and transmits a driving force of a rotatable driving shaft to the cylindrical body, the end cover part comprising: a cover member having a tubular portion into which the driving shaft is to be fitted, and a to-be-fitted portion which is disposed in a flange-like manner in a periphery of the tubular portion, and which is to be fitted into an end portion of the cylindrical body; cut surfaces which are disposed respectively on an inner circumference of the tubular portion of the cover member and an outer circumference of the to-be-fitted portion and concentrically about a common reference central axis; and a recess which is disposed so as to ensure a gap between the inner circumference of the tubular portion and the driving shaft in a place of the inner circumference of the tubular portion adjacent to the cut surface of the inner circumference and corresponding to a portion on which an external force acts from the radially outer side of the tubular portion on an outer circumference of the tubular portion, wherein the recess is formed as an inclined portion in which an inner circumferential section shape of the tubular portion is expanded as advancing toward an end of the tubular portion.