| 摘要 |
PURPOSE:To aim at not only preventing bearings from partial abrasion, but also improving their lubricating effects, by constituting the vibrator so as to have, in a reciprocal directions plural pairs of bearings with rolling mechanism in only one direction, in a vibrator equipped, as a guide, with bearings which make minute reciprocating motion on an orbital plane. CONSTITUTION:Bearings 2, 2' are so constituted as to make rolling motion only in the directions opposite to each other respectively. In a forward movement, the bearing 2' rolls, while the bearing 2 slides. In a backward movement, the bearing 2 rolls. In this constitution, since each of bearings 2, 2' rolls only in the direction preset respectively, each of bearings 2, 2' rolls in the defined direction, making no reciprocating rolling-motion at one place, even in the case of a reciprocating motion with a minute amplitude, thus enabling bearings to eliminate their partial abrasion and improve their lubricating effects. |
