| 摘要 |
PURPOSE:To satisfactorily secure the accuracy of an inserting part of oil seal and to reduce a movement resistance of a mobile pole by supporting the mobile pole with a fixed pole through a pair of supporting pins and slide bearing means which are provided corresponding to those pins. CONSTITUTION:The fixed pole 11 and the mobile pole 12 forming the inserting part 1 of oil seal have half-cut columnar shapes respectively, and the fixed pole 11 is fixed on the table 4 of a main body and the mobile pole 12 is arranged attachably and detachably to the fixed pole 11. Pairs of through-holes 11a, 12a which are provided on upper/lower parts of the fixed pole 11 and mobile pole 12, are formed so as to pass through an axis center of the inserting part 1 and to orthogonally cross with opposite surfaces 11b, 12b of the fixed pole and mobile pole respectively. The supporting pins 5 are inserted into the through-holes 11a, 12a in the state that the slide bearings 6 are interposed, and the mobile pole 12 is supported in the floating state by the fixed pole 11 through the pins 5 and the bearings 6. A mechanism for supporting the mobile pole 12 can be thereby made simple and compact, and also the movement resistance for the mobile pole can be reduced. |
