Putter head

Abstract

A putter head includes a head body and an insert mounted in the head body. The insert includes an insert body including a first material, and an elastic member including a second material. The elastic member is disposed in a recess formed upward from a lower end portion of the insert body. The first material has a specific gravity of 2.5 or more and 4.5 or less. The second material has a specific gravity of 0.7 or more and 1.3 or less. A front surface of the insert serves as a face surface.

What is claimed is: 
     
         1 . A putter head, comprising:
 a head body; and   an insert mounted in the head body, wherein   the insert includes
 an insert body including a first material, and 
 an elastic member including a second material, 
   the elastic member is disposed in a recess formed upward from a lower end portion of the insert body,   the first material has a specific gravity of 2.5 or more and 4.5 or less,   the second material has a specific gravity of 0.7 or more and 1.3 or less, and   a front surface of the insert serves as a face surface.   
     
     
         2 . The putter head according to  claim 1 , wherein
 the recess is open on a sole side, a toe side, and a heel side of the putter head.   
     
     
         3 . The putter head according to  claim 1 , wherein
 the insert body is trapezoidal as viewed in a face-back direction.   
     
     
         4 . The putter head according to  claim 1 , wherein
 the insert includes a groove that is recessed from the face surface,   the groove includes
 a plurality of first grooves extending in a toe-heel direction, and 
 a second groove positioned between adjacent first grooves of the first grooves, and 
   a width of the second groove is smaller than a width of the first grooves.   
     
     
         5 . The putter head according to  claim 1 , wherein
 the first material includes at least one selected from the group consisting of aluminum, titanium, and metal alloy.   
     
     
         6 . The putter head according to  claim 1 , wherein
 the second material includes at least one selected from the group consisting of silicone, a polymer, and resin.   
     
     
         7 . The putter head according to  claim 1 , further comprising:
 one or more weight adjustment parts at a sole of the putter head.   
     
     
         8 . The putter head according to  claim 1 , wherein
 the insert is mounted in the head body via an adhesive layer.   
     
     
         9 . The putter head according to  claim 1 , wherein
 the insert body is colored by surface treatment.