Strike plate of a golf club head

Abstract

A strike plate of a golf club head has a striking zone and an elastic annular part defined around the striking zone and adjacent to the edge of the strike plate. Multiple annular grooves are formed in the elastic annular part on the rear face of the strike plate and are arranged at intervals. Multiple annular flanges are formed on the rear face. Each annular flange is formed between two adjacent annular grooves. The elastic annular part with multiple thicker and thinner parts alternately arranged provides elasticity as a spring. Therefore, when any part of the striking zone of the strike plate is stricken on the golf ball, the elastic annular part generates a sufficient elastic effect to effectively enlarge the sweet spot on the strike plate.

What is claimed is: 
     
         1 . A strike plate of a golf club head comprising:
 a strike face and a rear face formed on opposite sides of the strike plate;   a striking zone defined on the strike plate;   an elastic annular part defined around the striking zone, adjacent to an edge of the strike plate and having
 multiple annular grooves formed in the elastic annular part on the rear face of the strike plate and arranged at intervals; and 
 multiple annular flanges formed on the rear face, and each annular flange formed between two adjacent annular grooves. 
   
     
     
         2 . The strike plate as claimed in  claim 1 , wherein the elastic annular part has two to six annular grooves. 
     
     
         3 . The strike plate as claimed in  claim 1 , wherein a width of the elastic annular part is 3 mm to 15 mm. 
     
     
         4 . The strike plate as claimed in  claim 2 , wherein a width of the elastic annular part is 3 mm to 15 mm. 
     
     
         5 . The strike plate as claimed in  claim 1 , wherein
 a thickness defined between an innermost part of the annular grooves and the striking face is 1 mm to 2.8 mm; and   a thickness defined between an outermost part of the annular flanges and the striking face is 1.7 mm to 3.5 mm.   
     
     
         6 . The strike plate as claimed in  claim 2 , wherein
 a thickness defined between an innermost part of the annular grooves and the striking face is 1 mm to 2.8 mm; and   a thickness defined between an outermost part of the annular flanges and the striking face is 1.7 mm to 3.5 mm.   
     
     
         7 . The strike plate as claimed in  claim 3 , wherein
 a thickness defined between an innermost part of the annular grooves and the striking face is 1 mm to 2.8 mm; and   a thickness defined between an outermost part of the annular flanges and the striking face is 1.7 mm to 3.5 mm.   
     
     
         8 . The strike plate as claimed in  claim 4 , wherein
 a thickness defined between an innermost part of the annular grooves and the striking face is 1 mm to 2.8 mm; and   a thickness defined between an outermost part of the annular flanges and the striking face is 1.7 mm to 3.5 mm.