| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the assembly of a power transmission device, by engaging an elastic piece of an engaging member, narrowing its space, with an engaged part, also disengaging the piece separated from the engaged part while performing elastic resetting. SOLUTION: A support pin 8 inserted to a through hole of a disk part to calk the tip end is fixed to the disk part 4a of a pulley 4, and a flange part 7a of diameter smaller than in a fixed position of this support pin 8 is formed into a hub 7. A pair of pins 11 are fixed with a space apart on the same circumference to this flange part 7a, and a hook 9a, which is an elastic piece at both ends of a torsional coil spring 9, is inserted in a condition narrowing its space in an engaged part as between these pins 11. By elastic deformation, the one hook 9a, while performing elastic resetting, can be detached instantaneously from the pin 11. In this way, the assembly of a power transmission device can be facilitated. |
