| 摘要 |
PROBLEM TO BE SOLVED: To provide an easy adjusting means for a stick that uses a pin for adjusting height. SOLUTION: Specified action of a pin 2 at a pin hole 14 in the inner pipe part 13 is performed by operation of a rhomboid frame 1 in a pantograph type expansion/contraction structure provided in the inner pipe part 13. Specified operation of the rhomboid frame 1 is controlled by an operation rod device composed of a long and a short rods 6, 7, a coil spring 12, etc., through an expansion/contraction operation device composed of a center shaft 3, etc., provided in the rhomboid frame 1. By operation of a flanged ring 16 on which a cross bar 9 for operation provided at an end part on the other side of the long rod 6 is installed, a height adjusting means as combination of the pin 2 at the inner pipe part 13 and an adjusting pin hole 18 at an outer pipe part 17 is formed as an easy one. |
