| 摘要 |
<p>PROBLEM TO BE SOLVED: To set the centroid of a head low without the impairment of the balance of the inertia moments in respective directions. SOLUTION: The sole part 2, in a plane view, of the golf club head made of a metal consisting of an internally hollowed shell body is bisected to a face 4 side front region F and a back side 7 rear region R. The thickness within at least a portion of this front region F is made >=2 times the average thickness of the rear region R. As a result, the weight of the head is concentrated to the face side front region and, therefore, the centroid is made near to the face side and the centroid position on the clubface, which is defined as the point where the line perpendicular the clubface from the centroid of the head intersects with the clubface, may be set low.</p> |
