Stroller with detachable auxiliary power structure

A stroller, comprising:

• a stroller body, which comprises:
• a front wheel member, which comprises a front wheel frame, and a front right wheel and a front left wheel mounted to a bottom of the front wheel frame,
• a rear wheel member, which comprises a rear wheel frame, and a rear right wheel and a rear left wheel mounted to a bottom of the rear wheel frame, wherein a handrail is connected to the rear wheel frame, and the handrail is arranged to extend toward a rear side of the rear wheel frame, and
• a folding member, which comprises a right folding frame and a left folding frame, front ends of the right folding frame and the left folding frame being pivotally connected to the front wheel member, rear ends of the right folding frame and the left folding frame being pivotally connected to the rear wheel member;
• at least one power control module, which is mounted to a bottom of the rear wheel frame and comprises:
• a drive motor, which outputs a rotational speed and a torque,
• a deceleration mechanism, which is connected with the drive motor, such that the rotational speed and the torque outputted from the drive motor are changeable by the deceleration mechanism,
• a drive controller, which is connected with the drive motor, and
• two drum brakes, which are respectively arranged on a tire of the rear right wheel and a tire of the rear left wheel and are rotating at a same speed as the tires, each of the drum brakes comprising a brake drum and a brake shoe, such that during braking, the brake shoe that is circular is expanded outward to respectively rub against an inner surface of the brake drum that rotates with the tire to force the brake drum and the tire to slow down until the rotation is stopped;
• and
• a battery unit, which is connected to the drive controller to serve as a power source;
• wherein the at least one power control module further comprises two universal coupling members, and the two universal coupling members are connected to two support frames, the two support frames being respectively mounted to the rear right wheel and the rear left wheel, the two universal coupling members being connected to the rear wheel frame;
• and
• wherein a wheel-motor separation/combination module is arranged on one of the rear right wheel and the rear left wheel, the wheel-motor separation/combination module comprising:
• a motor component, which is electrically connected with the battery unit and comprises an outer flange, and
• a motor cover, which comprises an inwardly recessed trough and is fit, by means of the inwardly recessed trough, to an outside surface of the motor component, the motor cover comprising a plurality of projecting rims, a plurality of fastener elements extending through the projecting rims and the outer flange of the motor component to securely combine and fix the motor cover and the motor component together, the outside surface of the motor cover comprising a plurality of guide rails, a rubber ring being arranged between the motor cover and the motor component at a fitting site thereof;
• and
• one of the rear right wheel and the rear left wheel comprises an outer frame and an outer tire, the outer frame and the outer tire being integrally formed to combine together, the outer frame comprising an inside fitting surface, the inside fitting surface comprising a plurality of guide grooves respectively corresponding to and mating with the guide rails, the outer frame being fit to the outside surface of the motor cover to have the guide grooves and the guide rails joined together, a plurality of fastener elements penetrating through the outer frame and reaching into the projecting rims of the motor cover to have the outer frame and the motor cover fixedly combined together.