Independent-drive wheel for a wheel-mounted vehicle

An independent-drive wheel mechanism of a motor vehicle having a rim (1), an axle (3) an electric drive means comprising an electric motor and a voltage control unit (36), said electric motor comprising a stator (9) rigidly secured to the axle having a first magnetic circuit (10) and which supports an even number of equally circumferentially spaced magnetic members (11) having alternating polarity, and a rotor (12) having a second magnetic circuit (16) is mounted on the wheel axle (3), is rotatable with respect to the stator (9) and supports the rim (1) said second magnetic circuit (16) comprising windings made with salient electromagnets (14,15) facing towards the magnetic members (11) which are spaced along the circumference in the form of at least two groups and which are positioned, within each group, in such a manner that their axes (17,19) are spaced from each other at distances which are a multiple of the distance between the axes (18) of two adjacent magnetic members (11) of the stator, wherein any two adjacent electromagnets (14,15) of one group have opposite polarities where the distance between their axes (17,19) is equal to an even number of times the distance between the axes (18) of the adjacent magnetic members (11) of the stator and any two adjacent electromagnets (14,15) of one group have identical polarities where the distance between their axes (17,19) is equal to an even number of times the distance between the axis (18) of the adjacent magnetic members (11) of the stator, two groups of the electromagnets (14,15) of the rotor are offset at an angle with respect to one another in such a manner that when the axes (17) of the electromagnets (14) of the rotor of one group are aligned with axes (18) of the respective magnetic members (11) of the stator, the axes (19) of the electromagnets (15) of other groups are not aligned with axes (18) of the respective magnetic members (11) of the stator, the electromagnets (14,15) within each group of the rotor being electrically connected to members (26,27,28,29) of individual current collectors (4,5) rigidly secured to the rotor (12), the member (26,27,28,29) of the current collectors (4,5) being engageable with a distribution commutator (6) which is electrically coupled to the voltage control unit (36) which is mounted on the stator and is so constructed that when the axes (17) of the electromagnets (11) of any one of the groups are aligned with the axes (18) of respective magnetic members (11) of the stator, the electromagnets (14) of this group are disconnected from the voltage control unit (36).