| 摘要 |
PURPOSE:To improve waterproof capability in quiescence in such a way that a turn-up tip part of an inner cover which has been tightly fixed on the revolving side is abutted on the bottom surface of the circular groove of an outer cover which has been tightly fixed on the stationary side of a bearing device, and a bent tip part of the outer cover is abutted on the bottom surface of the groove part of the inner cover. CONSTITUTION:An outer cover 4 has a circular groove which opens on the side of a bearing 2, and the circular part in it is tightly fixed on a shaft 1 on the stationary side. An inner cover 5 is made ito a groove shape which opens on the outside, its inner circumferential side is made into the turn-up part 7, and it is tightly fixed at the end part of the inner circumferential face of a roller pipe 3. The tip of the bent part 6 of the outer cover 4 is abutted on the groove part bottom of the inner cover 5, and the tip of the turn-up part 7 of the inner cover 5 is abutted on the groove part bottom of the outer cover 4. The path which has been formed by the both covers 4, 5 is constituted to be most narrowed between the tip of the bent part 6 and the groove part of the inner cover 5, and between the tip of the turn-up part 7 and the groove part of the outer cover. |
