| 摘要 |
<p>An electric motor includes a motor housing (3) configured with an inner receiving space (30), and including a surrounding wall (32) formed with an air inlet (321), and an end wall (33) formed with air outlets (331). The air inlet (321) and the air outlets (331) are in spatial communication with the inner receiving space (30). A rotor unit (4) is disposed rotatably in the inner receiving space (30), and includes a rotor shaft (41) extending along a pivot axis (a1) and rotatable relative to the motor housing (30) about the pivot axis (a1), and a rotor (42) sleeved fixedly on the rotor shaft (41). Astatorunit (2) is mounted fixedly in the motor housing (3), and is disposed spacedly around the rotor (42). The rotor (42) has an annular outer surface formed with an air groove (423) that extends from a first end (425) of the rotor (42) to a second end (426) of the rotor (42) opposite to the first end (425) in the pivot axis (a1).</p> |
