| 摘要 |
PURPOSE:To prevent the deterioration of the function of the device by forming an annular air passage close to a stator coil and arranging air nozzles opened towards the stator coil in the air passage and efficiently cool the stator coil. CONSTITUTION:When a field coil 7 conducts, a plurality of pole cores 4 and 5 which constitute a rotary field pole are excited, and S and N poles are formed alternately. When a stator coil 9 conducts, each torque is generated on the pole cores 4 and 5, and a crankshaft 1 is revolved through a flywheel 3. In this device, an annular air passage 15 is formed at the part close to the stator coil 9 in a clutch housing 14. In this air passage 15, a number of air nozzles 16 opened towards the stator coil 9 are arranged. Therefore, air is supplied into the clutch housing 14, and the stator coil 9 can be cooled efficiently. |
