| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent both of the backlash in the mounting part with a restriction member and the seizure in the sliding surface with a rotary shaft. <P>SOLUTION: A role mounted on a housing 16 through the restriction member 26 and a role of receiving a turbine shaft 14 by a sliding surface are played by two kinds of members such as an outer cylinder member 21 and inner cylinder members 27 and 31. One formed with steel that is a material whose hardness is higher than that of both inner cylinder members 27, 31 is used as the outer cylinder member 21 playing the role of a former. A copper material (brass) is used which is a material different from that of a steel turbine shaft 14 and a material having hardness lower than that of the outer cylinder member 21, and a porous body formed by sintering this material is used as both inner cylinder members 27, 31. Both inner cylinder members 27, 31 may be fixed by the diffusion bonding for the outer cylinder member 21, or may be fixed with the press fitting. <P>COPYRIGHT: (C)2013,JPO&INPIT |
