Claw-pole rotor for an electrical machine

KK A claw-pole rotor for an electrical machine, in particular a rotary current generator, having two pole wheels, which each carry claw poles ( and , respectively), which each originate in a plate region and have a pole root, and on a circumference of the claw-pole rotor, claw poles of the pole wheels are located in alternation, and located between the claw poles or interstices, and a claw pole has a radially outward-oriented cylindrical-jacketlike surface, by which a pivot axis is defined, and a chamfer extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole ( and , respectively), wherein the chamfer has a center portion m in the edge direction that intersects a transition plane which demarcates the pole root and the freely projecting part of the claw pole ( and , respectively), and the center portion m amounts to 8/10 of the length, oriented in the edge direction, of the chamfer; and that the claw pole has a width B, oriented in the circumferential direction, and a half width Bon the cylindrical surface, in a plane of the claw pole that is vertical to the pivot axis, defines a point (P), and a tangent (T) can be inscribed into this point (P), and an angle of inclination α which has a magnitude of between 15° and 25° is enclosed between the tangent (T) and the chamfer in the plane that is vertical to the pivot axis.