| 摘要 |
PROBLEM TO BE SOLVED: To provide a golf club configured to have an adjustment function specialized only in a loft angle.SOLUTION: A cross-sectional shape of an inner diameter surface of a shaft insertion hole 17 provided in a hosel part 16 and a cross-sectional shape of an outer diameter surface of a shaft sleeve 21 to be inserted into the shaft insertion hole 17 are defined as a combination of an ellipse and a precise circle, or a combination of ellipses having mutually different major axes. This configuration defines a swinging direction of a head body 12 with respect to the shaft sleeve 21 as a direction orthogonal to a striking face provided on the head body 12, thus capable of adjusting only the loft angle of the head body 12. |
