| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power steering device and the like capable of suppressing an increase of the viscosity of hydraulic oil at a low temperature and the like. <P>SOLUTION: A heater H1 is disposed in a pump 20 so that a heat generating part 40 of the heater H1 faces in a reservoir tank 30 in a separate state from a pump housing PH, the hydraulic oil in the reservoir tank 30 is heated by the heater H1 and the pump housing PH is heated by the hydraulic oil heated by the heater. Thereby, the pump housing PH can be uniformly heated, the viscosity of the hydraulic oil accumulated in the inner part of the pump 20 can be efficiently lowered and as a result, the responsiveness of an electric motor 31 can be enhanced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
