| 摘要 |
A motor generally includes a housing (1), a cover (2), and a cooling fan (4). The cover (2) defines multiple first inlet holes (23) and is provided with an air collecting ring (24) around the first inlet holes for collecting some of the air current generated by the cooling fan (4). Furthermore, the cover (2) is provided with multiple wind-catching projections (25). The housing (1) defines multiple second inlet holes (10) near its opening (12). The cover (2) is installed to the housing (1) such that the wind-catching projections (25) are respectively located above the second inlet holes (10) of the housing, so as to collect some of the air current. Furthermore, multiple recesses (26) are defined between the wind-catching projections (25), so that some of the air current may flow along the outer surface of the housing (1) via the recesses (26) to further cool down the housing. |
