Patent ID: 7626290

Claim:
A magnetic driving apparatus, comprising: a bi-pole rotor wheel coupled to a speed adjustment motor and comprising a ferromagnetic wheel base and a magnetic rotor, the magnetic rotor including a first magnetic rotor part and a second magnetic rotor part, the first and second magnetic rotor parts being fixed to a circumferential surface of the wheel base in parallel with each other, being spaced a first gap apart from each other, and having opposite magnetic polarities to each other, each of the first and second magnetic rotor parts being formed by arranging alternatively magnetic rectangular blocks and non-magnetic spacers, and when being mounted to a circumferential surface of the ferromagnetic wheel base, the magnetic blocks and non-magnetic spacers of the first magnetic rotor part being aligned with those of the second magnetic rotor part; and a linear stator which is disposed at a side of the bi-pole rotor wheel, is formed by arranging alternatively magnetic rectangular blocks and non-magnetic spacers on a stator base, and has a width substantially equal to that of the bi-pole rotor wheel, wherein a space between two adjacent magnetic rectangular blocks of the linear stator is substantially equal to that between two adjacent magnetic rectangular blocks of bi-pole rotor wheel in a circumferential direction of the wheel base, wherein a second gap is provided between the linear stator and the bi-pole rotor wheel and smaller than the first gap between the first and second magnetic rotor parts, and wherein the magnetic rotor and the linear stator form a magnetic circuit, and when the speed adjustment motor rotates, a pulling force is generated between the magnetic rotor and the linear stator so as to drive a train.