| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable crank device capable of freely, smoothly and rigidly changing the amplitude of a connection rod due to rotation of a crank shaft from zero to a constant setting value by controlled external force.SOLUTION: A variable crank device includes: a moved body that includes, in a through hole, an inclination crank pin inclined to the central line of a main shaft and connected to the main shaft, and a bearing into which the inclination crank pin is inserted; a guide device that holds the moved body in a movable manner; and an adjustment device that rotates, moves, rotation-stops or movement-stops the inclination crank pin so as to change the position of an action point where the inclination crank pin and the bearing are engaged with each other. The variable crank device changes a distance between the central line of the main shaft and the action point by the adjustment device, and moves the moved body along the guide device. |
