Differential collector ring

The utility model discloses a differential collector ring, including the base of loudspeaker forms, be fixed with the lower casing of tube -shape on the base, the suit has the hollow fixed axle in the base, be equipped with the transmission shaft on the fixed axle, the cover is equipped with and fixes the transmission is epaxial on the swing pinion and fix the lower swing pinion on the base on the fixed axle, it has the rotary sleeve to rotate the suit on the fixed axle, install on the rotary sleeve with last, underspin dress gear meshing transmission's intermediate gear, rotary sleeve external fixation cover be equipped with the cover outside the transmission shaft and with the endocentric transmission cover of transmission shaft, the transmission is put in and is equipped with the ring core, transmission shaft top fixed mounting has the top cap, the fixed cover in rampart position of top cap is equipped with and the lower last casing of casing to closing, install respectively on the inner wall of upper and lower casing with ring core complex brush. The utility model relates to a going out brand -new structure, having reduced the kind of spare part, reduced the volume, reduced manufacturing cost, what also prolonged maintains the interval cycle.