ELECTRIC MOTOR HAVING REDUCED DETENT TORQUE

摘要

An electric motor (1), particularly a direct current motor, having an armature (4) comprising a plurality of groove slots (14) for receiving current-carrying conductors of an armature winding (16), is to enable a particularly low detent torque by means of suitable measures. For this purpose, the invention provides the association of auxiliary grooves (22), the positioning of which is calculated according to the formula G_HN = (K + 1/2) * G_NR in relation to the center of the respectively associated groove slot (14) on a tooth (8) that is arranged between two groove slots (14), wherein K is an integer, and the detent angle I NR is calculated according to the formula G_NR = 2 p / X_R, and the number of detents X_R per revolution corresponds to the lowest common multiple KGV of the number of poles 2p and the number of grooves (N_N)_{of the armature (4).}