Heat sink fan and method for manufacturing heat sink that is used for the heat sink fan

摘要

A heat sink fan includes a heat sink ( 2 ) that is placed on a heat generating electrical component and a fan motor unit ( 4 ) having an axial flow fan ( 18 ) for supplying cooling air to the heat sink ( 2 ). A engaging portions ( 14 a) of an arm portions ( 14 ) of the fan motor unit ( 4 ) is engaged with a recesses ( 10 b) of the heat sink ( 2 ). Thus, movement of the fan motor unit ( 4 ) in the axial direction of the heat sink ( 2 ) is restricted so that the fan motor unit ( 4 ) is attached to the heat sink ( 2 ) securely.