| 摘要 |
PURPOSE: To avoid the interference of a conveyor ball and a support shell in an eccentric condition with a ball guide even when the force having the horizontal component is applied by supporting the support shell by an inner edge of a highest annular plate spring of a spring device in an annular band. CONSTITUTION: A conveyor ball 1 is supported through a bearing ball 15 only in an annular band concentric with the axis 60 of a non-spherical support shell 10. A spring device 70 to elastically urge the support shell 10 from a lower part to an upper part is formed as a bundle of annular plate springs 71 having the outside diameter corresponding to the adjacent inside diameter of a housing 30, and the support shell 10 is supported by an inner edge of the highest annular plate spring 71 of the spring device 70 in the annular band. |
