| 摘要 |
PROBLEM TO BE SOLVED: To increase a carry by lowering a centroid and provide a comfortable hitting sound.SOLUTION: A head body 12 has a hollow structure, where the inside surrounded by a face part 18, a crown part 20, a sole part 22, and a side part 24 is formed into a hollow part 32. A wall-thickness part 14 is located on at least one quadrant of a first quadrant Q1 and a second quadrant Q2 when viewing the head body 12 from the upper side, the head body provided on a sole back side 22B to bulge from the sole back side 22B to the crown part 20. The wall-thickness part 14 includes one or more ribs 16 bulging from the sole back side 22B towards the crown part 20 and extending along the wall-thickness part 14 along the sole back side 22B.SELECTED DRAWING: Figure 5 |
