Hollow golf club head

Abstract

Provided is a hollow golf club head capable of improving repulsion and degree of design freedom compared to the case where a golf club head is formed using only a single metallic material, by combining different kinds of materials as component materials of a face section. The face section of the hollow golf club head is made of a composite material in which metal and fiber-reinforced plastic are combined. For example, in the hollow golf club head comprising a plate member disposed on the face section, the plate member is partially made of fiber-reinforced plastic in a plane direction and the remainder of said plate member is made of metal.

1 . A hollow golf club head in which a plate member is disposed on a face section, wherein 
 said plate member is partially made of fiber-reinforced plastic in a plane direction and the remainder of said plate member is made of metal.    
   
   
       2 . The hollow golf club head as claimed in  claim 1 , wherein a peripheral portion of said plate member is made of fiber-reinforced plastic and the remainder of said plate member is made of metal.  
   
   
       3 . The hollow golf club head as claimed in  claim 1 , wherein a center portion of said plate member is made of fiber-reinforced plastic and the remainder of said plate member is made of metal.  
   
   
       4 . The hollow golf club head as claimed in  claim 1 , wherein a peripheral portion and a center portion of said plate member are made of fiber-reinforced plastic and the remainder of said plate member is made of metal.  
   
   
       5 . A hollow golf club head in which a plate member is disposed on a face section, wherein 
 said plate member is made of metal and a reinforcing member made of fiber-reinforced plastic is laminated to the back face of said plate member.    
   
   
       6 . The hollow golf club head as claimed in any one of  claims 1  to  5 , wherein, as said fiber-reinforced plastic, two or more kinds of fiber-reinforced plastics are combined to be used.  
   
   
       7 . The hollow golf club head as claimed in any one of  claims 1  to  5 , wherein an elastic modulus of fiber in said fiber-reinforced plastic is less than 27 ton/mm 2 .  
   
   
       8 . The hollow golf club head as claimed in any one of  claims 1  to  5 , wherein an elastic modulus of fiber in said fiber-reinforced plastic is 27 ton/mm 2  or more.  
   
   
       9 . A hollow golf club head in which a plurality of laminated plate members are disposed on a face section and only the peripheral portions of said plate members are bonded to a head body, wherein 
 at least one of said plate members is made of metal and the other members are made of fiber-reinforced plastic.    
   
   
       10 . A hollow golf club head in which a plurality of laminated plate members are disposed on a face section and only the peripheral portions of said plate members are bonded to a head body, wherein 
 at least one of said plate members is partially made of fiber-reinforced plastic in a plane direction and the remainder of said plate members is made of metal.    
   
   
       11 . The hollow golf club head as claimed in  claim 10 , wherein the peripheral portions of said plate members are made of fiber-reinforced plastic and the remainder of said plate members is made of metal.  
   
   
       12 . The hollow golf club head as claimed in  claim 10 , wherein a center portions of said plate members are made of fiber-reinforced plastic and the remainder of said plate members is made of metal.  
   
   
       13 . The hollow golf club head as claimed in  claim 10 , wherein the peripheral portions and center portions of said plate members are made of fiber-reinforced plastic and the remainder of said plate members is made of metal.  
   
   
       14 . A hollow golf club head in which a plurality of laminated plate members are disposed on a face section and only the peripheral portions of said plate members are bonded to a head body, wherein 
 said plurality of plate members are made of metal and a reinforcing member made of fiber-reinforced plastic is laminated to an opposing face of said plate members.    
   
   
       15 . A hollow golf club head in which a plurality of laminated plate members are disposed on a face section and only the peripheral portions of said plate members are bonded to a head body, wherein 
 said plurality of plate members are made of metal and a spacer made of fiber-reinforced plastic is interposed between the peripheral portions of said plate members.    
   
   
       16 . The hollow golf club head as claimed in any one of  claims 9  to  15 , wherein, as said metal, two or more kinds of metals are combined to be used.  
   
   
       17 . The hollow golf club head as claimed in any one of  claims 9  to  15 , wherein, as said fiber-reinforced plastic, two or more kinds of fiber-reinforced plastics are combined to be used.  
   
   
       18 . The hollow golf club head as claimed in any one of  claims 9  to  15 , wherein an elastic modulus of fiber in said fiber-reinforced plastic is less than 27 ton/mm 2 .  
   
   
       19 . The hollow golf club head as claimed in any one of  claims 9  to  15 , wherein an elastic modulus of fiber in said fiber-reinforced plastic is 27 ton/mm 2  or more.