The invention discloses a
DC motor and a rubber cover
assembly thereof. The rubber cover
assembly comprises an insulated rubber cover main body, wherein two carbon
brush chambers used for placing carbon brushes are arranged on an end face of an inner side of the rubber cover main body along the radial direction, the rubber cover
assembly further comprises two torsional springs, a
rectifier bridge,and a PPTC, the two torsional springs are respectively arranged corresponding to the carbon brushes in the two carbon
brush chambers and are provided with a first pin and a second pin, the rectifierbridge is connected with an outer wall of the rubber cover main body and is provided with a first AC pin, a second AC pin, a positive
electrode pin and a negative
electrode pin, the positive electrodepin is electrically connected with the first pin of one
torsion spring, the negative
electrode pin is electrically connected with the first pin of the other
torsion spring, the PPTC is connected withan outer wall of the rubber cover main body and is provided with an input pin and an output pin, and the output pin is electrically connected with the first AC pin. The rubber cover assembly is advantaged in that the pins of the
rectifier bridge are directly and electrically connected with the pins of the torsion springs and the pins of the PPTC, the structure is simple, the manufacturing cost iseffectively saved, damage to elements caused by
welding can be prevented, reliability of performance is guaranteed, and production efficiency is greatly improved.