| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a strong and inexpensive device which solves a problem that a clearance holding bearing and a sliding part for holing a clearance between a field magnet and an armature are strong but expensive or inexpensive but weak, respectively, in a linear wind power generator including a power generation part at a blade tip of a rotating impeller, a linear motor helicopter including a driving part in a blade tip of a rotating impeller and an in-wheel motor including a contact area of a rotating tire and a rim. <P>SOLUTION: When a thickness in a direction parallel to a rotation axis of an armature is T, a thickness in a direction parallel to a rotation axis of a cam follower is D and a clearance of a bore in a direction parallel to a rotation axis of a rotating duct is W, three or more cam followers in which the relationship of T<D<W is established are arranged in a circle around on the shroud. Then, the clearance between the field magnet and an armature can be kept constant even if the rotating duct receives stress from an axial direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
