| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electric pump suppressing inclination of a shaft and reducing size in an axial direction. <P>SOLUTION: A stator 50 includes a magnetic material portion 51, and forms a magnetic field by energization to a winding. A rotor 60 is rotatably arranged radially inward of the stator 50, and rotated by receiving the magnetic field formed by the stator 50 when energizing the winding. A shaft 70 is rotated integrally with the rotor 60. Bearing portions 35, 75 rotatably support the shaft 70. By rotation of the shaft, a pump section 12 sucks fluid from a suction port and delivers the fluid from a delivery port. Since the axial center of the first bearing portion 75 is positioned inside an internal area defined by both the axial ends of the magnetic material portion 51 of the stator 50, the inclination of the shaft 70 due to rotation can be suppressed. Also, the size in the axial direction can be reduced in comparison with the case of bearing by both the ends of the rotor 60. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
