GOLF CLUB AND METHOD OF DESIGNING HOLLOW GOLF CLUB HEAD

摘要

A hollow golf club head (14), a golf club (10), and a method of designing the hollow golf club head, the hollow golf club head (14) comprising a face part (24) for hitting a golf ball, a crown part (18) connected to the face part (24), and a sole part (22) connected to the face part (24), wherein the ratio of a smaller equivalent rigidity to a larger equivalent rigidity out of the first equivalent rigidity of a crown member (18) and the second equivalent rigidity of a sole member (22) is 0.75 or less, whereby the golf club (10) having the hollow golf club head (14) capable of increasing the carry of a golf ball by a method different from such conventional methods that a loft angle is adjusted and the wall thickness of a hitting surface is reduced to increase the carry of the golf ball can be provided.