| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an in-wheel motor cooling structure capable of efficiently cooling an in-wheel motor. Ž<P>SOLUTION: The cooling structure 100 is provided with: a conveying pump 110 for conveying fluid filled into the inside of a housing 20 to a fluid reservoir 50; and a heat pipe 120 for receiving/giving heat received from the fluid conveyed to the fluid reservoir 50 to a brake disc 61. The heat pipe 120 is provided with a main pipe 121 having a base end part adjacent to the fluid reservoir 50 and a distal end part arranged on an outer edge part of a hub 41 and formed with a capillary pipe on an inner peripheral surface; and a sub-pipe 122 having one end part communicated with/connected to a position close to the base end part of the main pipe 121 from the distal end part of the main pipe 121 by a predetermined length and the other end part abutted on the brake disc 61, not formed with the capillary pipe on the inner peripheral surface and having a distance from the other end part to a rotation shaft of the hub 41 equal to or less than a distance from one end part to the rotation shaft of the hub 41. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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