| 摘要 |
PURPOSE:To enable use with high precision at various environmental temperature by putting a rolling element between inner and outer rings whose one end is engaged with a rotary shaft and the other end is engaged with a support body in play, and energizing the inner or outer ring with which rotary shaft is not engaged in specific direction. CONSTITUTION:A bearing 10 is pressed on and supported by a support body 12 when its outer ring 11b is energized by a plate spring 14. When environmental temperature changes, space 13 which exists between the outer ring 11b and support body 12 is changed due to difference of coefficient of thermal expansion of the bearing 10 and support body 12. However, the bearing 10 is pressed on and supported by inner wall of the support body 12 because the outer ring 11b is moved and energized by the plate spring 14. Even if load such as impact is applied, the plate spring 14 bends, and is not broken because it is made of metal. Thus, it is possible to realize support of rotary shaft with high precision without being affected by changes of temperature. |
