| 摘要 |
Disclosed is a golf club head which enables to improve a direction of a hit ball while assuring a carry and run of the ball corresponding to a head speed and a position at which the ball is hit on a face part, and enables to assure a stable direction of a hit ball while realizing a stable carry and run of the ball even if the ball is hit at a position other than the sweet spot. More specifically, in the golf club head, center of figure Cf of the face part roughly coincides with sweet spot Ss which is a point of intersection of the face part and a perpendicular line dropped from the center of gravity of the head toward the face part, and roll radius R2 of the face part at a position distance Z apart from center of figure Cf of the face part along vertical axis Lz fulfils a predetermined conditional equation, provided that a moment of inertia around an axis orthogonal to a vertical plane containing sweet spot Ss and a center of gravity of the head is Ix, a distance from the sweet spot to the center of gravity of the head is Yg, and a loft angle isθ0. |
