Rotor for use in fan motor, has hub with connecting unit which is guided via clearance holes in closed side of housing to fix hub to outer side of housing, such that hot air in housing is dissipated through holes to surrounding air

摘要

The rotor has a housing (21) with opened and closed sides, and a hub (22). A wall (213) is provided between the opened and closed sides. Clearance holes (2111) with inclined inner walls are provided in the closed side. The hub has a connecting unit (223), which is guided via the clearance holes to fix the hub to the outer side of the housing, such that the hot air in the housing is dissipated through the holes to the surrounding air.