| 摘要 |
PURPOSE:To arrange so that a long life and a stable action may be assured by providing a flexible member between a part of the external ring of a bearing whose internal ring is fixed to a rotary shaft and a bracket and providing a buffer action between the bracket and the bearing as well as a rotation stopping action on the external ring. CONSTITUTION:An external ring 1 for a bearing 12 interposed between a bracket and a rotary shaft 5 prevents abrasion against an insert 14 of high hardness at time of rotary contact. In addition, an external ring 19 for the bearing 12 is opposed to the insert 14 and the external periphery of a part crowded out of the insert is attached with ''O'' ring 13. This ''O'' ring is made of comparatively harder synthetic rubber and is interposed between the external ring 19 and a bracket 17 to maintain an airtightness between the side of the insert 14 and a protrusion of a housing 1. Under this constitution, an abrasion on the insert 14 can be reduced and a stable rotary action over a long period be assured. |
