Linear actuator
AssigneeSchaeffler Technologies AG & Co. KG
InventorDietmar Rudy
Life of this patent
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Abstract
A linear actuator including an electric motor having a stator and a rotor, in addition to a screw drive having a spindle and a nut which is guided by the rolling element on the spindle and which is coupled to the rotor. The nut is mounted in a rotationally fixed manner on a housing component by a planetary roller bearing.
Claims10
A linear actuator comprising an electric motor with a stator and a rotor, a planetary gear drive with a spindle, a first plurality of planets, and a nut, wherein the first plurality of planets mesh with the spindle and the nut, and wherein the nut is coupled with the rotor, and is supported axially and radially for rotation on a housing component by a planetary rolling contact bearing having a second plurality of planets arranged to mesh with an outer ring and the nut via grooves in the outer ring and the nut, and
- wherein the planetary gear drive includes one or more outer rings rotationally locked in the nut, wherein the one or more outer rings mesh with the first plurality of planets.
A linear actuator comprising an electric motor with a stator and a rotor, a planetary gear drive with a spindle, a first plurality of planets, and a nut, wherein the first plurality of planets mesh with the spindle and the nut, and wherein the nut is coupled with the rotor, and is supported axially and radially for rotation on a housing component by a planetary rolling contact bearing having a second plurality of planets arranged to mesh with an outer ring and the nut via grooves in the outer ring and the nut, and
- wherein the planetary rolling contact bearing is arranged axially beyond the stator.
Dependencies are inferred from the claim text.