| 摘要 |
A motor structure includes a housing, a cover, an air collecting structure fixed to the cover, and a cooling fan. The cover defines a plurality of inlet holes. The air collecting structure defines a plurality of through holes aligned with the inlet holes of the cover, so as to provide a path for allowing a central portion of the air current generated by the cooling fan to enter the housing. The housing defines a plurality of communication holes and a plurality of outlet holes for allowing the air which has entered the housing to flow thereout. In addition, the present invention provides another path so that an outer portion of the air current can flow along the outer surface of the housing to reduce the temperature of the housing. |
| 主权项 |
1. In a motor including a housing, a cover, a rotating shaft, and a cooling fan, wherein the housing has a surrounding wall defining therein an inner space with a front opening and has a rear closure wall opposite to the front opening, the rear closure wall defining a central hole and a plurality of outlet holes; the cover, which is substantially disk-shaped and closes the front opening of the housing, has a central hub defining a central hole; the rotating shaft is mounted across the inner space of the housing, the rotating shaft having a first end which is inserted through the central hole of the rear closure wall and having a second end which is inserted through the central hole of the cover; the cooling fan is fixed to the second end of the rotating shaft, so that the cooling fan is rotated together with the rotating shaft; wherein the improvement comprises:
the cover defines a plurality of inlet holes around its central hub; an air collecting structure, which is adapted to be fixed to the cover, has a central hub defining a central hole aligned with the central hole of the cover for allowing the second end of the rotating shaft to insert therethrough and has an outer ring around the central hub of the air collecting structure and defines a plurality of through holes, located between the outer ring and the central hub of the air collecting structure and aligned with the inlet holes of the cover, whereby a central portion of a whirling, ongoing air current generated by the cooling fan can flow through the space between the outer ring and the central hub of the air collecting structure and then flow through the through holes of the air collecting structure and the inlet holes of the cover to enter the inner space of the housing and finally flow out of the housing via the outlet holes for dissipating the heat generated in the housing. |
