| 摘要 |
PURPOSE:To smooth the rolling of a roller and prevent the occurrence of exothermic and vibrational phenomena by providing a rotatable inclined ring between a cylindrical leg shaft and a roller fitted on the outside thereof and forming the roller cylindrically and a roller guide surface into a plane. CONSTITUTION:When an operating angle is made between first and second shafts 11, 15, a leg shaft 19 rotates about the axis X while swinging so that the contact of a cylindrical roller 23 with a guide surface tends to change from the line contact to the point one. Then, the reaction received from the guide surface by the cylindrical roller 23 is offset to an end of the contact line. Since the reaction acts on a position remote from the axis Y of the inside diameter surface of an inclined ring 20, said ring 20 receives a rotation regulating force about the axis Y so that the outer periphery of the cylindrical roller 23 holds always the line contact condition relative to the guide surface. As a result, the cylindrical roller 23 smoothly rolls along the guide surface without any restriction to prevent the occurrence of exothermic and vibrational phenomena. |
