Patent ID: 8757990

Claim:
A blower fan, comprising: a) a motor comprising a rotating shaft and a casing; b) a bracket; c) a fan housing comprising a cavity; d) a fan wheel; and e) fan blades; wherein: the motor is disposed on the fan housing by means of the bracket; an extended portion of the rotating shaft extends into the cavity of the fan housing and connects with the fan wheel; the fan blades are disposed on the rotating shaft and between the motor and the fan housing; the casing of the motor is disposed with air vents; the bracket forms an annular side wall, and a cavity is formed inside the annular side wall; the annular side wall comprises air outlets; the air outlets are connected with the cavity of the annular side wall; the fan blades are disposed in the cavity of the annular side wall; a top end of the annular side wall extends inward to form a motor-support plate; the bracket is connected with an end surface of the motor casing via the motor-support plate; a bottom end of the annular side wall extends outward to form a housing-contact plate; the bracket is connected to the fan housing via the housing-contact plate; a pad is disposed between the housing-contact plate and the fan housing for resisting vibration and insulating heat; the housing-contact plate is centrosymmetric; and the pad is a centrosymmetric plate.