| 摘要 |
PROBLEM TO BE SOLVED: To utilize a sealant suitable for rotation and slide in the axial direction, in a sealing mechanism disposed at a fitting portion in which two members are rotatably and slidable in the axial direction. SOLUTION: In the sealing mechanism for rotation and slide in the axial direction between two members, an inner round bar member is inserted in an outer cylinder member to be rotatable and axially slidable to form the fitting potion. In the fitting portion: (a) an axially sliding sleeve having a sealant for axially sliding on an inner circumferential face is fitted to the inner round bar member unrotatably and axially slidably by a required distance, while the sealant for axially sliding is brought into contact with an outer peripheral face of the inner round bar member, and the axially sliding sleeve is engaged with the outer cylindrical member rotatably and axially unslidably; and (b) a rotating sleeve having a sealant for rotation on the inner peripheral surface is rotatably fitted to the axially sliding sleeve while the rotating sealant is brought into contact with an outer peripheral face of the sleeve, and the rotating sleeve is fixed to the outer cylindrical member. |
