| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a favorable swinging while maintaining low gravity center of a head main body for a long period. SOLUTION: Downwardly protruded parts 29, 31 are protruded in a sole part 21 along an oscillation direction integrally with the sole part 12, and a weight 33 of a larger specific gravity than that of the sole part 21 is installed in the protruded parts 29, 31. The protruded parts 29, 31 have each an opening part formed at a tip in a protrusion direction, and the weight 33 is exposed in the opening part to be flush with the tip of the protruded parts 29, 31.</p> |
