| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve the improvement of heat radiation at a motor part, and to prevent fluid leakage. <P>SOLUTION: The fluid pump includes a pump part 2, a motor part 3 having a fixed stator 32 and a rotor 36 rotatably set therein and driving the pump part 2, a motor housing 31 housing at least the motor part 3, a synthetic resin cylindrical partition part 35b engaged with the motor housing 31 and intercepting the stator 32 from a rotor 36, a bypass path 39 bypassing a part of the fluid flowing through the pump part 2 to an inner space part of the cylindrical partition part 35b as for cooling, and a seal ring S set between the engaging faces of the cylindrical partition part 35b and motor housing 31. The motor housing 31 is composed of a material having higher heat resistance than the cylindrical partition part 35b. A deformation suppressing mechanism B is provided for suppressing creep deformation of the cylindrical partition part 35b due to the abutting force of the seal ring S. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
