Golf club head

Abstract

A golf club head is of an iron type. The golf club head includes a face portion that includes a face surface configured to hit a ball, and score lines recessed from the face surface and extending in a toe-heel direction. A first region, a second region, and a third region are sequentially defined in the face surface located between the score lines next to each other. The first, second, and third regions are arranged in a direction perpendicular to the score lines. The first region includes first fine grooves recessed from the face surface and extending in the direction perpendicular to the score lines. The second region includes second fine grooves recessed from the face surface and extending in a direction oblique to the score lines. The third region includes third fine grooves recessed from the face surface and extending in the direction perpendicular to the score lines.

What is claimed is: 
     
         1 . A golf club head that is of an iron type, the golf club head comprising:
 a face portion that includes
 a face surface configured to hit a ball, and 
 a plurality of score lines recessed from the face surface and extending in a toe-heel direction, wherein 
   a first region, a second region, and a third region are sequentially defined in the face surface located between the score lines that are next to each other, the first region, the second region, and the third region being arranged in a direction perpendicular to the score lines,   the first region includes a plurality of first fine grooves recessed from the face surface and extending in the direction perpendicular to the score lines,   the second region includes a plurality of second fine grooves recessed from the face surface and extending in a direction oblique to the score lines, and   the third region includes a plurality of third fine grooves recessed from the face surface and extending in the direction perpendicular to the score lines.   
     
     
         2 . The golf club head according to  claim 1 , wherein
 one end of the plurality of first fine grooves reaches one of the score lines that are next to each other,   another end of the plurality of first fine grooves is connected to one end of the plurality of second fine grooves,   another end of the plurality of second fine grooves is connected to one end of the plurality of third fine grooves, and   another end of the plurality of third fine grooves reaches another of the score lines that are next to each other.   
     
     
         3 . The golf club head according to  claim 2 , wherein
 the plurality of first fine grooves extend inward of the one of the score lines that are next to each other, and   the plurality of third fine grooves extend inward of the another of the score lines that are next to each other.   
     
     
         4 . The golf club head according to  claim 1 , wherein
 the plurality of second fine grooves include
 a plurality of fine grooves extending in a first direction oblique to the score lines, and 
 a plurality of fine grooves extending in a second direction that is oblique to the score lines and crosses the first direction. 
   
     
     
         5 . The golf club head according to  claim 4 , wherein
 the plurality of second fine grooves are disposed in a form of a mesh as viewed in a direction perpendicular to the face surface.   
     
     
         6 . The golf club head according to  claim 1 , wherein
 in the direction perpendicular to the score lines, a length of the second region is greater than a length of each of the first region and the third region.   
     
     
         7 . The golf club head according to  claim 6 , wherein
 in the direction perpendicular to the score lines, the length of each of the first region and the third region is 0.1 L or more and 0.3 L or less, and the length of the second region is 0.4 L or more and 0.8 L or less,   where L denotes a distance between the score lines that are next to each other, in the direction perpendicular to the score lines.   
     
     
         8 . The golf club head according to  claim 1 , wherein
 a pitch of the first fine grooves, a pitch of the second fine grooves, and a pitch of the third fine grooves are 0.06 mm or more and 0.5 mm or less.   
     
     
         9 . The golf club head according to  claim 8 , wherein
 the pitch of the first fine grooves, the pitch of the second fine grooves, and the pitch of the third fine grooves are 0.06 mm or more and 0.15 mm or less.   
     
     
         10 . The golf club head according to  claim 1 , wherein
 an oblique angle of the second fine grooves with respect to the score lines is 30 degrees or more and 60 degrees or less.   
     
     
         11 . The golf club head according to  claim 1 , wherein
 a loft angle of the golf club head is 45 degrees or more.