| 摘要 |
PROBLEM TO BE SOLVED: To improve a carry of striking while expanding a sweet area.SOLUTION: In a first reference cross section 32 of a golf club head 10, an angle which a straight line Lk connecting a first boundary point K1 and a crown surface maximum height point Ph where a height of a crown surface 16A from a horizontal plane HP becomes a maximum makes to the horizontal plane HP is regulated as a connection angle θ to a face part 14 of a crown part 16, and a weighted average wall thickness t of the face part 14 is also regulated. As a result of this, the deflection amount of the crown part 16 is secured, and a coefficient of rebound of the face part 14 is set in a proper range, which become advantageous in improving a carry of striking while expanding a sweet area.SELECTED DRAWING: Figure 15 |
