Golf club

Abstract

A golf club 2 is provided with a head 4 having a hosel hole 18 and a shaft 6. The golf club 2 has a mounting/detaching mechanism detachably mounting the head 4 and the shaft 6 to each other. The mounting/detaching mechanism can fix the shaft 6 to the hosel hole 18 of the head 4 at a plurality of circumferential mounting positions. The shaft 6 has anisotropy producing coupled deformations of bending and torsion. Preferably, an angle θ 1 between an axis line of the shaft 6 and an axis line of the hosel hole 18 is 0 degree. Preferably, a bending torsional amount of the shaft 6 is equal to or greater than 0.5 degree.

1 . A golf club comprising:
 a head having a hosel hole;   a shaft; and   a mounting/detaching mechanism detachably mounting the head and the shaft to each other,   wherein the mounting/detaching mechanism can fix the shaft to the hosel hole of the head at a plurality of circumferential mounting positions; and the shaft has anisotropy producing coupled deformations of bending and torsion.   
     
     
         2 . The golf club according to  claim 1 , wherein an angle θ 1  between an axis line of the shaft and an axis line of the hosel hole is 0 degree. 
     
     
         3 . The golf club according to  claim 1 , wherein the mounting/detaching mechanism comprises a sleeve fixed to a tip part of the shaft, a rotation-preventing part regulating relative rotation between the sleeve and the hosel hole, and a coming-off preventing part regulating axial relative movement between the sleeve and the hosel hole, and
 the rotation-preventing part and the coming-off preventing part can fix the shaft to the hosel hole of the head at the plurality of circumferential mounting positions.   
     
     
         4 . The golf club according to  claim 1 , wherein a bending torsional amount of the shaft is equal to or greater than 0.5 degree. 
     
     
         5 . The golf club according to  claim 1 , wherein a bending torsional amount of the shaft is equal to or greater than 1.0 degree. 
     
     
         6 . The golf club according to  claim 1 , wherein the plurality of circumferential mounting positions include a position causing face-closing torsion linked with bending of the shaft accompanying a toe-down phenomenon.