Claw-pole rotor for an electrical machine

A claw-pole rotor for an electrical machine, having two pole wheels (26, 27), which each carry claw poles (28 and 29, respectively), which each originate in a plate region (50) and have a pole root (53), and on a circumference of the claw-pole rotor (20), claw poles (28, 29) of the pole wheels (26, 27) are located in alternation, and located between claw pole interstices (56), and a claw pole (28, 29) has a radially outward-oriented cylindrical-jacketlike surface (43), by which a pivot axis (65) is defined, wherein a chamfer (68) extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole (28 and 29, respectively), wherein the chamfer (68) has a center (M), wherein the center (M) centrally divides a length (l) of said chamfer (68), wherein the chamfer (68) has a center portion (m) in an edge direction that intersects a transition plane (59) which demarcates the pole root (53) and the freely projecting part of the claw pole (28 and 29, respectively), wherein the center portion (m) is arranged symmetrically relative to the center (M), wherein the center portion (m) amounts to ⅓ of the length (l) of the chamfer (68);

• and wherein the claw pole (28, 29) has a width BK oriented in the circumferential direction, and a half width BK on the cylindrical surface (43), in a plane of the claw pole (28, 29) that is vertical to the pivot axis (65), defines a point (P), wherein a tangent (T) is inscribable into said 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 (68) in the plane that is vertical to the pivot axis (65), wherein the tangent (T) lies in a plane that is perpendicular to the pivot axis (65).

A claw-pole rotor for an electrical machine, having two pole wheels (26, 27), which each carry claw poles (28 and 29, respectively), which each originate in a plate region (50) and have a pole root (53), and on a circumference of the claw-pole rotor (20), claw poles (28, 29) of the pole wheels (26, 27) are located in alternation, and located between claw pole interstices (56), and a claw pole (28, 29) has a radially outward-oriented cylindrical-jacketlike surface (43), by which a pivot axis (65) is defined, wherein a chamfer (68) extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole (28 and 29, respectively), wherein the chamfer (68) has a center (M), wherein the center (M) centrally divides a length (l) of said chamfer (68), wherein the chamfer (68) has a center portion (m) in an edge direction that intersects a transition plane (59) which demarcates the pole root (53) and the freely projecting part of the claw pole (28 and 29, respectively), wherein the center portion (m) is arranged symmetrically relative to the center (M), wherein the center portion (m) amounts to 8/10 of the length, oriented in the edge direction, of the chamfer (68);

• and wherein the claw pole (28, 29) has a width BK oriented in the circumferential direction, and a half width BK on the cylindrical surface (43), in a plane of the claw pole (28, 29) that is vertical to the pivot axis (65), defines a point (P), wherein a tangent (T) is inscribable into said 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 (68) in the plane that is vertical to the pivot axis (65), wherein the tangent (T) lies in a plane that is perpendicular to the pivot axis (65), wherein between the chamfer (68) and the cylindrical-jacketlike surface (43) is a stepped transition (80), and wherein the stepped transition (80) is disposed in a direction of free ends of the claw pole (28, 29).