Rotor for an electric machine
A rotor for an electric machine, including a rotor shaft ( 1 ) on which an axial stop is provided, which is formed by a securing ring ( 3 ) received in a slot ( 4 ) in the shaft, and a rotor body ( 6 ) pushed onto the rotor shaft ( 1 ) and supported axially on the stop. The securing ring ( 3 ) is received in a recess ( 10 ) in the rotor body ( 6 ) and is radially surrounded by the latter.
1 . A rotor for an electric machine, comprising:
a rotor shaft on which an axial stop is provided, which is formed by a securing ring received in a slot in the rotor shaft;
a rotor body pushed onto the rotor shaft and supported axially on the stop; and
a recess in the rotor body in which the securing ring is received, and the securing ring is radially surrounded by the rotor body;
wherein the rotor body is radially spaced from the securing ring via a gap in an area of radial overlap, and viewed radially, a minimum height of the gap is smaller than a depth of the slot in which the securing ring is received, such that the securing ring is minimally expandable into the gap.
2 . The rotor according to claim 1 , wherein the securing ring has radial widened portions at two ends thereof, on which mounting openings are provided, wherein a minimum height of the gap is given between the widened portions and the rotor body.
3 . The rotor according to claim 1 , wherein the rotor body axially engages over the securing ring over at least half of a width of the securing ring.
4 . The rotor according to claim 1 , wherein the rotor body comprises a balancing disc via which the rotor body is supported on the securing ring, and the recess is in the balancing disc.
5 . The rotor according to claim 4 , wherein the balancing disc has an axially projecting, cylindrical annular collar on which the recess is provided.
6 . The rotor according to claim 1 , wherein the rotor body is axially secured on a side opposite the securing ring by a caulking sleeve or a shaft nut.
7 . An electric machine, comprising the rotor according to claim 1 .
8 . A rotor for an electric machine, comprising:
a rotor shaft having a circumferential slot therein, wherein the rotor shaft has a radially increased thickness in an area of the circumferential slot compared to a radial thickness of the rotor shaft adjacent the radially increased thickness in the area of the circumferential slot;
a securing ring received in the circumferential slot in the rotor shaft;
a rotor body pushed onto the rotor shaft and supported axially on the securing ring;
and a recess in the rotor body defining a wall that at least partially radially surrounds the securing ring.
9 . The rotor according to claim 8 , wherein the rotor body is radially spaced from the securing ring via a gap in an area of radial overlap.
10 . The rotor according to claim 9 , wherein, viewed radially, a minimum height of the gap is smaller than a depth of the slot in which the securing ring is received.
11 . The rotor according to claim 10 , wherein the securing ring has radial widened portions at two ends thereof, on which mounting openings are provided, wherein a minimum height of the gap is given between the widened portions and the rotor body.
12 . The rotor according to claim 8 , wherein the rotor body includes a recess surface that axially contacts the securing ring, and a radially inner surface of the recess extends over at least half of a width of the securing ring.
13 . The rotor according to claim 8 , wherein the rotor body comprises a balancing disc via which the rotor body is supported on the securing ring, and the recess is in the balancing disc.
14 . The rotor according to claim 13 , wherein the balancing disc has an axially projecting, cylindrical annular collar on which the recess is provided.
15 . The rotor according to claim 8 , wherein the rotor body is axially secured to the rotor shaft on a side opposite the securing ring.