Direct-current mute speed reduction motor device with split type noise reduction outer sleeve assembly

The utility model relates to a direct-current mute speed reduction motor device with a split type noise reduction outer sleeve assembly, which comprises a direct-current brushless motor body and a speed reduction gear set matched with a starting gear on a motor shaft of the direct-current brushless motor body. The motor device further comprises a bottom box body capable of completely accommodating the direct current brushless motor body, a middle sleeve capable of being assembled with the bottom box body in a butt joint mode and completely accommodating the reduction gear set, and an upper cover plate in butt joint with the middle sleeve in a sealed mode. The direct-current brushless motor is simple and compact in structure, the direct-current brushless motor body and the reduction gear set are sealed and wrapped through the bottom box body, the middle sleeve and the upper cover plate, so that the excellent noise reduction effect is achieved, silent operation is achieved, the display effect and the experience