Controller mounting structure of integrated adjustable-speed motor

The utility model relates to a controller mounting structure of an integrated adjustable-speed motor, which comprises a motor and a controller, wherein the housing of the controller has a cylindrical structure. The housing of the controller is composed of a bottom housing and an upper cover. The bottom housing is formed by plastic. Mounting holes are arranged on the bottom of the bottom housing beforehand; a wire inlet/outlet terminal is arranged on the side surface of the bottom housing beforehand; and a bolt base is formed on the outer circumference of the bottom housing. The upper cover is formed by aluminum alloy. A heat conducting column, heat radiating beds and screw bases for locking the PCB are formed on the inner surface. Heat radiating fins are formed on the outer surface of the upper cover. Screw holes which correspond with the screw bases of the bottom housing are formed on the outer circumference of the upper cover. The bottom housing is locked on the back end cover of the motor through bolts. The upper cover is locked on the bottom housing through the bolt holes on the outer circumference. The controller mounting structure has the cylindrical structure of which the diameter is not larger than the diameter of the motor through mounting the controller on the back end cover of the motor, thereby preventing wind resistance increase of an air channel and preventing interference to flow direction of air flow. Otherwise, the upper cover which is formed by aluminum alloy has high heat conductivity and performs the function of a heat radiation, thereby realizing two purposes through one technical plan.