Patent ID: 7918746

Claim:
A golf club shaft obtained by winding and curing a prepreg sheet including a matrix resin and a fiber, wherein the sheet includes a full length sheet including a tip end and a butt end, provided wholly in a longitudinal direction of the shaft and a partial sheet provided partially in the longitudinal direction of the shaft, the number of the full length sheets is equal to or greater than two, the number of the partial sheets is equal to or greater than seven, and when four sections obtained by dividing the shaft into four equal parts in the longitudinal direction are set to be first, second, third and fourth sections from a tip end side in order, the total number of end(s) of the partial sheets positioned in the first section is represented as N 1 , the total number of end(s) of the partial sheets positioned in the second section is represented as N 2 , the total number of end(s) of the partial sheets positioned in the third section is represented as N 3 , and the total number of end(s) of the-partial sheets positioned in the fourth section is represented as N 4 , all of N 1 , N 2 , N 3 and N 4 are equal to or greater than one, wherein an end of a partial sheet is a side of the partial sheet falling inside of each of the four sections, wherein when a side of the partial sheet is positioned on the tip end or positioned on the butt end, the side of the partial sheet is not regarded to be the end of the partial sheet, wherein if the partial sheet is triangular, then the partial sheet is regarded to have no end, and wherein the position of the end of the partial sheet is determined by a middle point of the end.