| 摘要 |
PROBLEM TO BE SOLVED: To maintain specific amount of a lubricant between a vibration isolation rubber and a bearing even when the bearing is rotated.SOLUTION: A ventilation device includes: a bearing into which a shaft is inserted; and a lubricant applied to between a vibration isolation rubber 13 with a recess 12 for holding the bearing, the bearing, and the vibration isolation rubber 13. A groove 14 is provided in the recess 12. Due to this configuration, caused by the rotation of the bearing, the lubricant held in the groove 14 is supplied to a region between the vibration isolation rubber 13 and the bearing through which the groove 14 passes. Thus, even when the bearing is rotated, the ventilation device can maintain a specific amount of the lubricant between the vibration isolation rubber 13 and the bearing.SELECTED DRAWING: Figure 5 |
