CONNECTING ROD AND DOUBLE RECLINING MECHANISM

摘要

A connecting rod having satisfactory insertion performance for a mating member and generating neither vibrations nor noises in regard to a connecting rod cut in a predetermined length by searing work and provided with rotation transmitting portions having a non-circular cross section at least at both ends and a double reclining mechanism are provided. A small-diameter column portion 101 having a diameter smaller than a diameter of a rotation transmitting portion T, a tapered portion 103 provided continuously from the small-diameter column portion 101 and gradually increasing in diameter, and the rotation transmitting portion T provided continuously from the tapered portion 103 are provided at least at one end of a connecting rod 13 from a tip-end side.