Golf club head

Abstract

A weight material is provided on a heel side of a hosel portion in a golf club head. A convex portion E is provided on the heel side of the head. The weight material is disposed within the convex portion. The weight material is made of high specific gravity metal such as tungsten, and welded on both a lower column and a skirt portion.

1 . A golf club head comprising: 
 a hollow main body;    a hosel portion that penetrates through at least one of an upper face of the main body on a heel side and an upper side of a side face of the main body on the heel side, and is integrated with the main body; and    a weight member that is provided on the hosel portion at a heel side thereof.    
   
   
       2 . The golf club head according to  claim 1 , wherein 
 the hosel portion includes a skirt portion and a column extending downwards from the skirt portion, and    the weight member is disposed between the skirt portion and the column.    
   
   
       3 . The golf club head according to  claim 2 , wherein 
 the skirt portion includes a convex portion protruding outwards, and    the weight member is fixed to an inner surface of the convex portion.    
   
   
       4 . The golf club head according to  claim 1 , wherein 
 the hosel portion includes a first member on the heel side and a second member on a toe side, and    the first member is higher in specific gravity than the second member.    
   
   
       5 . A golf club head comprising: 
 a hollow main body; and    a hosel portion that penetrates through at least one of an upper face of the main body on a heel side and an upper side of a side face of the main body on the heel side, and is integrated with the main body, wherein    at least a part of the side face of the main body on the heel side includes a weight member.    
   
   
       6 . The golf club head according to  claim 5 , wherein 
 a part of the side face of the main body on the heel side includes a convex portion protruding outwards, and    at least a part of the convex portion includes the weight member.    
   
   
       7 . The golf club head according to  claim 1  , wherein the main body and the hosel portion are made of metal.  
   
   
       8 . The golf club head according to  claim 5 , wherein 
 the main body is a metallic cast product,    the weight member is made of metal, and    the weight member is cast into the main body.    
   
   
       9 . The golf club head according to  claim 5 , wherein at least a part of the side face of the main body on the heel side is made of fiber reinforced plastic.  
   
   
       10 . The golf club head according to  claim 9 , wherein 
 the part of the side face on the heel side made of fiber reinforced plastic includes a first layer and a second layer, and    the weight member is disposed between the first layer and the second layer.    
   
   
       11 . The golf club head according to  claim 10 , wherein the weight member is made of fiber reinforced plastic containing metal powder.  
   
   
       12 . The golf club head according to  claim 10 , wherein the weight member includes metal piece.  
   
   
       13 . The golf club head according to  claim 5 , wherein the main body and the hosel portion are made of metal.