| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent wear caused by heat generation in a shaft of a pump section and thereby prevent a pump from falling into malfunction. <P>SOLUTION: The pump includes: a pump section with an impeller for sucking and discharging fluid, and a motor section for rotationally driving the pump section, wherein a central boss section 231 of a rotor of the pump section is integral with a pump rotating shaft 26 of a cylindrical shape; the pump rotating shaft 26 is rotatably supported at both ends thereof by bearings 27, 28 of cylindrical shape; ends of the pump rotating shaft 26 have forms of a convex section 262 and a concave section 263; the bearings 27, 28 are formed of the same member as that of the pump rotating shaft; and slide-contact sections 100 between the pump rotating shaft 26 and the bearings 27, 28 are formed by rotatably inserting the convex sections 262 into the concave sections 263. <P>COPYRIGHT: (C)2012,JPO&INPIT |
