| 摘要 |
PROBLEM TO BE SOLVED: To prevent a windhole 43 from being clogged with deposits of foreign matters such as dust or sand in a motor including, in a motor case 2, a fan 6 fixed onto a rotating shaft 3 together with a rotor 4, and the windhole 43 provided at the rotor 4 and penetrated in the axial direction, so that the outside air sucked into the motor case 2 by rotation of the fan 6 flows, as cooling air, toward the windhole 43 in the axial direction from one side to the other side.SOLUTION: A windhole 43 is inclining radially outward in the axial direction from one side to the other side. |
