| 摘要 |
<p>PURPOSE:To facilitate the layout of support pins and gates at the time of molding while maintaining the symmetry of dimple arrangements by providing three ridge lines dividing adjacent regular octagons and regular quadrangles symmetrically on the right and left and dividing a golf ball into two, and forming dimple arrangements symmetrically on the right and the left against the ridge lines. CONSTITUTION:Multiple dimples 6 are provided on a spherical surface 2 formed with six regular octagons 3, eight regular hexagons 4, and 12 regular quadrangles 5 on the virtual spherical segment sections divided into tilted truncated cubic octahedrons. Three ridge lines 7 capable of dividing adjacent regular octagons 3 and regular quadrangles 5 symmetrically on the right and left and dividing a golf ball 1 into two without crossing any dimples 6 are provided, dimples 6 having the same arrangements are provided on eight-split faces divided by three ridge lines 7, and dimple arrangements are formed symmetrically on the right and the left against the ridge lines 7. The layout and design of support pins can be facilitated, and gates can be arranged at a nearly uniform interval with the same number on the right and the left on the basic arrangements of dimples.</p> |
