| 摘要 |
A roller has an outer tubular member, a central shaft, a connecting member that connect the outer tubular member and the central shaft at a central area of an axis of the roller, connecting the outer tubular member and the central shaft, a bend adjustable mechanism disposed between the outer tubular member and the central shaft at both ends of the roller, a first bearing structure that engages the outer tubular member and the bend adjustable mechanism; a second bearing structure that engages the bend adjustable mechanism and the central shaft; and a rotation preventing mechanism that prevents rotation of the bend adjustable mechanism. The bend adjustable mechanism has a plurality of spacer structures that individually adjust a distance between the first bearing structure and the second bearing structure in a radial direction of the roller.
|
