Golf club head

Abstract

A golf club head includes a hollow head main body provided with a recess portion in a sole portion thereof; a gravity center characteristic adjusting portion with a plate shape disposed in the recess portion between a center part of the recess portion and a part of a surrounding wall of the recess portion; and a fixing portion for fixing the gravity center characteristic adjusting portion onto the hollow head main body at an arbitrary rotational position.

1 . A golf club head comprising:
 a head main body having a recess portion in a sole portion thereof;   a gravity center characteristic adjusting portion disposed in the recess portion; and   a fixing portion for fixing the gravity center characteristic adjusting portion onto the hollow head main body at an arbitrary rotational position.   
     
     
         2 . The golf club head according to  claim 1 , wherein said gravity center characteristic adjusting portion includes a screw insertion hole, said fixing portion includes a male screw portion having a head portion and a shaft portion, and said head main body includes a female screw portion so that the shaft portion is inserted in the screw insertion hole to engage the female screw portion. 
     
     
         3 . The golf club head according to  claim 1 , further comprising an anti-rotation mechanism, said anti-rotation mechanism including a protruding portion formed on one of the head main body and the gravity center characteristic adjusting portion, and an engaging groove formed in the other of the head main body and the gravity center characteristic adjusting portion for engaging the protruding portion. 
     
     
         4 . The golf club head according to  claim 1 , further comprising a rib disposed in the recess portion.