The invention discloses a direct-current
speed reduction motor which comprises a motor body, a
speed reduction assembly and a maintaining
assembly, and the maintaining
assembly comprises a maintaining frame, a deformation part and a maintaining part. During installation, pressure is applied to the two retaining pieces in the opposite directions, so that the deformation pieces are stressed to deform, the area of the compression area is reduced, the retaining pieces enter the sliding grooves, the positioning blocks on the
speed reduction assembly are inserted into the compression area, and the fixing holes and the retaining pieces are kept to be matched for limiting. The direct-current gear motor is compact in structure, connection of the motor body and the speed reduction assembly is achieved through the maintaining assembly, and the speed reduction assembly can be assembled for use in use
modes of different scenes, or the motor body can be independently used for use. Meanwhile, the speed reduction assembly can be installed or assembled without the cooperation of other special tools through the maintaining assembly, so that workers can conveniently, timely and rapidly disassemble and assemble the speed reduction assembly, and in addition, the trouble of carrying special disassembling and assembling tools is saved.