Golf club head

Abstract

A golf club head includes a head body that includes a face portion and a sole portion; a cavity that is provided in the head body and at a rear-surface side of the face portion; a fiber-reinforced resin layer that is disposed in the cavity and at a rear surface of the face portion; and a resin member that is disposed in the cavity, close to the sole portion, and at a rear surface of the fiber-reinforced resin layer. The resin member extends in a toe-heel direction.

What is claimed is: 
     
         1 . A golf club head, comprising:
 a head body that includes a face portion and a sole portion;   a cavity that is provided in the head body and at a rear-surface side of the face portion;   a fiber-reinforced resin layer that is disposed in the cavity and at a rear surface of the face portion; and   a resin member that is disposed in the cavity, close to the sole portion, and at a rear surface of the fiber-reinforced resin layer, the resin member extending in a toe-heel direction.   
     
     
         2 . The golf club head according to  claim 1 , wherein
 a specific gravity of the head body is 7 or more and 9 or less,   a specific gravity of the fiber-reinforced resin layer is 0.7 or more and 1.3 or less, and   a specific gravity of the resin member is 0.9 or more and 1.3 or less.   
     
     
         3 . The golf club head according to  claim 1 , wherein
 the fiber-reinforced resin layer is disposed in the cavity over an entirety of the rear surface of the face portion.   
     
     
         4 . The golf club head according to  claim 1 , further comprising:
 a weight member that is fixed close to the sole portion of the head body, so as to face the face portion via the fiber-reinforced resin layer and the resin member, the weight member extending in the toe-heel direction.   
     
     
         5 . The golf club head according to  claim 4 , wherein
 a specific gravity of the weight member is 8 or more and 14 or less.   
     
     
         6 . The golf club head according to  claim 4 , wherein
 the weight member is fastened to the head body with two or more screws.   
     
     
         7 . The golf club head according to  claim 4 , wherein
 the weight member includes a butting portion, and   the butting portion penetrates through the weight member, and a tip portion of the butting portion is in contact with the resin member.   
     
     
         8 . The golf club head according to  claim 7 , wherein
 a specific gravity of the butting portion is 2.7 or more and 7.8 or less.   
     
     
         9 . The golf club head according to  claim 7 , wherein
 the butting portion is fastened to the weight member with a screw, and   a distance between the resin member and the tip portion of the butting portion is variable in accordance with a torque applied for fastening the butting portion to the weight member.   
     
     
         10 . The golf club head according to  claim 1 , wherein
 a thickness of the face portion is 1.4 mm or more and 1.85 mm or less.   
     
     
         11 . The golf club head according to  claim 1 , wherein
 a total weight of the golf club head is 240 g or more and 300 g or less.   
     
     
         12 . The golf club head according to  claim 1 , wherein
 a moment IY of inertia of the golf club head is 2,700 g·cm 2  or more.   
     
     
         13 . The golf club head according to  claim 1 , wherein
 a height of a center of gravity of the golf club head is 18 mm or less.