| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf club head and a golf club with big ball hitting sound and long echo. <P>SOLUTION: The golf club head includes a face part with a face surface for hitting a golf ball, a sole part, a crown part and a side part, and an outer shell structure is constituted of the face part, the sole part, the crown part and the side part. At least one member of the sole part, the crown part and the side part has an area where a curvature radius is larger than the minimum curvature radius of the face surface. The value of the resonance frequency of the area is within±10% of the value of the resonance frequency of the face surface. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
