Passenger train air conditioner electromagnetic clutch rotor and set nut

The utility model provides a passenger train air conditioner electromagnetic clutch rotor and set nut has solved the current electromagnetic clutch problem that the rotor locating piece becomes flexible after use a period, the scheme is, including the rotor, the rotor hole is the through -hole, and the one end of through -hole is convex internal spline towards the through -hole in, and the other end of through -hole is equipped with the internal thread, and its characterized in that still includes set nut, have the external screw thread that closes with interior thread to match on the outer disc of set nut, set nut through threaded connection to the rotor hole be equipped with internal screw thread one end in, the rotor is pressed towards set nut's outer terminal surface and is equipped with the knurling, the beneficial effects of the utility model are that: after using this rotor and set nut structure, set nut and rotor combine together completely, and set nut is unable not hard up, has stopped to become flexible the trouble that causes electromagnetic clutch to skid because of set nut.