主权项 |
1. A pressed pulley formed by pressing and comprising an outer tubular portion configured such that a belt can be wound around the outer tubular portion, an inner tubular portion provided inside of the outer tubular portion and configured such that a bearing can be fitted in the inner tubular portion, and a connecting portion connected to an end of the outer tubular portion and an end of the inner tubular portion,
wherein the connecting portion is an annular bent portion having a circular arc-shaped section and formed, on an inner periphery thereof, with an inner circular arc-shaped surface having a constant radius of curvature and connected to a radially inner surface of the outer tubular portion such that the radially inner surface extends in a first tangential direction of the inner circular arc-shaped surface, and connected to a radially outer surface of the inner tubular portion such that the radially outer surface extends in a second tangential direction of the inner circular arc-shaped surface. |