| 摘要 |
PURPOSE:To prevent the adhesion of the brush abrasion powder into a motor and the absorption of the moisture, by arranging a commutator to the pump side against a stator while arranging a cooling fan to the pump side of a motor. CONSTITUTION:A commutator 20 is arranged to the pump side 3 against the stator 18 while a fan 8 for producting the cooling wind is arranged to the pump side of the motor 1. Since the air is sucked from the rear of the motor 1 to cool the interior of the motor 1 and to exhaust the temperature rised wind, the leaked water at a shaft sealing device 14 or the dew at a bracket 12 is evaporated and blown off thereby the moist will never intrude into the motor 1 while the brush abrasion powder is completely prevented from adhering to the commutator 20, stator 18, etc. in the motor 1. |
