| 摘要 |
PURPOSE:To operate an operation lever to be handled by an operator easily and to prevent the operator's hand from fatigue over a long period by forming a vibratable hand receiver for receiving the hand at the time of handling the operation lever close to the operation lever. CONSTITUTION:The upper surface of the hand receiver 2 is formed like a recessed curve, an upper shaft 17 and a lower shaft 15 are rectangularly engaged with each other at the center part and the hand receiver 2 is fitted so as to be vibrated. The operator expands his hand from his maneuvering seat to the front, sets up a proper part from a wrist to a lower arm on a cradle of the hand receiver 2 and handles the operation lever 1 front and back or right and left. While receiving the hand, the hand receiver 2 can be vibrated in the same direction as the movement of the operation lever 1 to follow up the movement. Since the operation lever 1 is restored to the neutral position if being released, and therefore requires to be always grasped, the operating wrist is prevented from fatigue by making the hand receiver 1 receive the operation wrist. Thus, the position of the operation lever can be stabilized to operate the operation lever 1. |
