| 摘要 |
<p>PURPOSE: To delay and transmit momentum to a ball so as to damp audible vibration by providing a damping means for damping audible vibration generated when a front wall part collides with a golf ball on the front wall part of the front end of the main recessed part. CONSTITUTION: A main body part 11 of a head 20 partitions a heel 12, a toe 13, an upper surface 14 and a sole 15, and the main body part 11 further partitions a face 16 inclined upward and backward. The main body part 11 partitions two recessed parts intersecting each other. An undercut recessed part 22 is formed in such a shape as to be bulged outward from the main recessed part 21 to at least three of the top surface 14, the sole 15, the head part 13 and the heel part 12, or formed in such a manner as to position immediately after the front wall part 17. The part bulged toward the upper surface 14 and the part bulged toward the sole 15 of the undercut recessed part 22 are elongated in such a manner as to be extended toward the toe heel direction extending over the most part of the whole length of the head 10.</p> |
