| 摘要 |
PURPOSE:To provide a simple construction in an electrically driven pump wherein a motor and a pump is directly connected and to prevent a thermal effect of pump fluid from being transmitted to bearings which support a motor shaft by parallelly arranging the bearings at the unloaded side with respect to a rotor. CONSTITUTION:A driving magnet 11 is fit via a magnet holder 10 to the right en d of a motor shaft 21 which keeps a rotor 2, and interacts with a driven a magnet 151 which is disposed inside a back casing 27 of a pump to turn an impeller 15. Two bearings 21, 24 of the motor shaft 21 are fit to the left end at the unloaded side with respect to the rotor 2. Thereby, the need for bearings which are held by a bracket at the load side in the same kinds of such conventional pump may be eliminated and there may be not only an advantage of simplification of a construction but also another of no adverse thermal effect on the bearing when pump fluid is hot. |
