Golf club head

Abstract

An iron type golf club head includes a face member including a face portion and a back surface opposite to the face portion and a main body member which includes a hosel portion and to which the face member is fixed. A plurality of grooves are formed in the back surface. Each of the plurality of grooves includes a first groove portion which is formed on a leading edge side of the face portion in a height direction and extends continuously in a toe-heel direction over an area not less than a half of a width of the back surface in the toe-heel direction.

What is claimed is: 
     
         1 . An iron type golf club head that includes a face portion and a hosel portion, comprising:
 a face member including the face portion and a back surface opposite to the face portion; and   a main body member which includes the hosel portion and to which the face member is fixed,   wherein a plurality of grooves are formed in the back surface, and   each of the plurality of grooves includes a first groove portion which is formed on a leading edge side of the face portion in a height direction and extends continuously in a toe-heel direction over an area not less than a half of a width of the back surface in the toe-heel direction.   
     
     
         2 . The golf club head according to  claim 1 , wherein
 each of the plurality of grooves includes a second groove portion which extends from a heel-side end portion of the first groove portion to a top line side, and   each of the first groove portion and the second groove portion extends along an outline of the face portion.   
     
     
         3 . The golf club head according to  claim 1 , wherein
 a plurality of ribs are formed in the back surface, and   each of the plurality of ribs includes a first rib portion formed on the top line side of the face portion in the height direction.   
     
     
         4 . The golf club head according to  claim 3 , wherein
 the first rib portion extends continuously in the toe-heel direction over an area not less than the half of the width of the back surface in the toe-heel direction.   
     
     
         5 . The golf club head according to  claim 4 , wherein
 each of the plurality of ribs includes a second rib portion which extends from a toe-side end portion of the first rib portion to the leading edge side, and   each of the first rib portion and the second rib portion extends along the outline of the face portion.   
     
     
         6 . The golf club head according to  claim 2 , wherein
 the second groove portion extends over an area not less than a half of a heel-side width of the back surface in the height direction.   
     
     
         7 . The golf club head according to  claim 5 , wherein
 the second rib portion extends over an area not less than a half of a toe-side width of the back surface in the height direction.   
     
     
         8 . The golf club head according to  claim 3 , wherein
 the plurality of grooves are spaced apart from each other, and   the plurality of ribs are spaced apart from each other.   
     
     
         9 . The golf club head according to  claim 3 , wherein
 the plurality of grooves are two grooves parallel to each other, and   the plurality of ribs are two ribs parallel to each other.   
     
     
         10 . An iron type golf club head that includes a face portion and a hosel portion, comprising:
 a face member including the face portion and a back surface opposite to the face portion; and   a main body member which includes the hosel portion and to which the face member is fixed,   wherein a plurality of ribs are formed in the back surface, and   each of the plurality of ribs includes a first rib portion which is formed on a top line side in a height direction of the face portion and extends continuously in a toe-heel direction over an area not less than a half of a width of the back surface in the toe-heel direction.