Golf club

Abstract

A high performance golf club is provided at low cost, in which the thickness of a face portion is thinned and a sweet area is widened to enhance resilience to golf balls. In a golf club with a shaft 2 connected to a head 1, the head 1 is provided with a face 3 portion on a front face and a shaft connecting portion 8 on one side, in which at least the face portion 3 is formed from spring steel.

What is claimed is:  
     
         1 . A golf club with a shaft connected to a head provided with a face portion on a front face and a shaft connecting portion on one side, wherein at least said face portion is formed from spring steel.  
     
     
         2 . A golf club according to  claim 1 , wherein the thickness of said face portion is 2.5 mm or less.  
     
     
         3 . A golf club according to  claim 1 , further comprising a recess portion formed on a rear side of said head, and 
 wherein said head comprises: a head body including a window hole on a front face thereof, corresponding to said face portion, said window hole extending to communicate with the recess portion; a face plate fixed firmly to this window hole; is and a depressed portion as an undercut portion formed on the face side on a lower inner surface of the recess portion    
     
     
         4 . A golf club according to  claim 2 , further comprising a recess portion formed on a roar side of said heads and 
 wherein said head comprises: a head body including a window hole on a front face thereof, corresponding to said face portion, said window hole extending to communicate with the recess portion; a face plate fixed firmly to this window hole; and a depressed portion as an undercut portion formed on the face side on a lower inner surface of the recess portion.    
     
     
         5 . A golf club according to  claim 1 , further comprising a rear shell formed on a rear side of said head via a hollow portion, 
 wherein said head comprises: a head body including a window hole on a front face thereof, corresponding to the face portion, said window hole extending to communicate with the hollow portion; a face plate fixed firmly to this window hole; and a depressed portion as an undercut portion formed on the face side on a lower inner surface of the hollow portion.    
     
     
         6 . A golf club according to  claim 2 , further comprising a rear shell formed on a rear side of said head via a hollow portion, 
 wherein said head comprises: a head body including a window hole on a front face thereof, corresponding to the face portion, said window hole extending to communicate with the hollow portion; a face plate fixed firmly to this window hole; and a depressed portion as an undercut portion formed on the face side on a lower inner surface of the hollow portion.