| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rotor structure having improved rust and corrosion preventing performance and longer service life. <P>SOLUTION: The rotor structure comprises a housing, an upper joint structure, a lower joint structure, and a bearing. An axial center portion of the housing has an opening. The upper joint structure is divided into a fixed part and a threaded pattern part. The fixed part has a minimum radius larger than the radius of the opening, and the threaded pattern part is connected to the opening. The lower joint structure has a threaded pattern corresponding to the threaded pattern part. The upper and lower joint structures are firmly fixed corresponding to each other and held and fixed on the housing. The bearing is fixed to the upper joint structure or the lower joint structure. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
