| 摘要 |
PURPOSE:To seal the moving section of a king pin by means of an annular body and prevent and prevent water from being immersed by providing the annular body between fixed and moving cases. CONSTITUTION:The lower end 5 of a fixed case 4 is fit in the cylindrical section 9 of a moving case 8 and both the cases can be revolved around the axis of a king pin 3. A protrusion 13 is formed at the fixed case 4 and a gap is covered, then an annular body 15 is fit in the case. The upper edge 16 of the annular body 15 is extended outside and the lower edge 17 engages with the seal 19 which is mounted on the moving case 8. Since the protrusion 13 and the upper edge 16 of the annular body 15 cover the gap, aid the seal 19, and the seal 19 touches the lower edge 17, water is prevented from being immersed. |
