| 摘要 |
PROBLEM TO BE SOLVED: To relieve the impact when a ball directly hits a pole and to eliminate the danger of the bounced back ball by disconnecting the pole base part of the pin on a green to two members and forming the pin device of a pin enclosing the outer periphery of the base part inclusive of the disconnected part with an elastic member and a supporting member for supporting the same. SOLUTION: The pin device A erected in the central part of the green B consists of the pin (a) and the supporting member (b) for supporting the same. The pin (a) is mounted with a flag (d) at the upper end of the pole (c). The pole (c) is divided at the base part to an upper member c. and a lower member c2 a restoring material 2 consisting of a columnar material, etc., of urethane, or rubber is interposed between the upper and lower members c1 and c2 . The outer peripheries of the upper and lower members c1 , c2 of the base apart inclusive of the disconnected part 1 are enclosed with a densely wound spiral spring (e). On the other hand, the supporting member (b) is composed of a pipe body (f) insertable with the spiral spring (e) of the size enclosing the body and a holding plate (g) of a circular shape or square shape, etc., spreading in a right angle direction at its top end. |
