| 摘要 |
PURPOSE:To reduce the number of works for changing the oscillating stroke of a crank by providing an eccentric serrated shaft for fixing a rotor and a crankshaft and an eccentric crankshaft. CONSTITUTION:If a stroke is changed and adjusted, a serrated shaft 17 is pulled out of a serrated hole 16. The fitting position of the serrated shaft 17 to the serrated hole 16 is controlled corresponding to a required change, and then the shaft is fitted in the hole again and fixed. Thus, since the center OC of the serrated shaft 17 and the center Ob of a crankshaft 5 are eccentric by a distance (e), the quantity Ex of eccentricity between the center Oa of a rotor 2 and the center Ob of the cranshaft 5 is changed so as to change and control a stroke. |
