Patent ID: 7603059
Filing Date: 2009-10-13
Classification: G03G,Y10T

Abstract:
1. A shaft coupling for connecting a drive shaft with a driven shaft coaxially arranged with the drive shaft, comprising: a first coupling attached to one of the drive shaft and the driven shaft; a second coupling attached to the other of the drive shaft and the driven shaft, the second coupling capable of moving toward and away from the first coupling; and an urging member that urges at least one of the first coupling and the second coupling toward the other; wherein the first coupling comprises a first coupling portion having a first end face which is formed on a side opposite the second coupling and which extends in the axial direction, and a first concave portion which is formed on a side surface opposite the second coupling; the second coupling comprises a second coupling portion having a second end face which extends in the axial direction and is capable of surface-to-surface contact with the first end face of the first coupling portion, and a first convex portion which extends toward the first coupling and configured to be inserted into the first concave portion; and the first concave portion of the first coupling portion further includes a cam face with which at least a tip of the first convex portion is capable of coming into contact with in order to convert a pressing force of the first convex portion into a pressing force between the first end face and the second end face.