STEP MOTOR Russian patent published in 2011 - IPC H02K37/02 H02K37/08 H02K37/12 

FIELD: electricity.

SUBSTANCE: in a step motor, comprising a multipole rotor with a coaxial disk with permanent magnets distributed along its periphery, having alternating polarity and magnetised parallel to its axis, excitation windings are arranged at both sides of the rotor disk parallel to the axis of rotor rotation with the possibility of interaction by the developed electromagnet fields with both poles of magnets diametrically arranged in the disk holes, having height that is equal to or exceeds the disk thickness, at the same time the excitation windings of each phase are arranged symmetrically to the rotor axis, excitation windings of different phases are arranged with an angular pitch multiple to the half of the angular pitch of magnets arrangement on the rotor disk, at the same time the multiplication ratio of one phase is even, of the second phase - odd, the diameter of pole tips in the excitation winding pole cores is not less than the diameter of the magnets, but does not exceed the pitch of the magnets arrangement.

EFFECT: increased reliability of the step motor operation, by increasing the developed torque and simplifying the design, reduced dimensions and weight.

3 cl, 4 dwg