Electromechanical actuator and rear-axle steering system
AssigneeSchaeffler Technologies AG & Co. KG
InventorsBenjamin Wuebbolt-Gorbatenko, Daniel Faber, Alexander Hausmann
Life of this patent
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Abstract
An actuator for rear-axle steering system of a motor vehicle comprises a threaded spindle (2) which is surrounded by planets (21), each provided with a corresponding profiling (8), wherein the planets (21) are guided in a driven cage (13) and, via further profiling (25), contact a nut (4) that surrounds areas of the planets (21) provided with said profiling (8) and is supported with respect to the cage (13) by rolling bearings (14), and wherein the cage (13) is mounted in a housing (20) by means of further rolling bearings (30, 31, 32, 33) and is non-rotatably connected to an output-side component (12, 34) of a further transmission (10, 11, 12).
Claims17
An electromechanical actuator, having a threaded spindle which is surrounded by planets, each provided with a corresponding profiling, wherein the planets are guided in a driven cage and, via further profiling, contact a nut that surrounds areas of the planets provided with said profiling and is supported with respect to the cage by rolling bearings, and wherein the cage is mounted in a housing by means of further rolling bearings and is non-rotatably connected to an output-side component of a further transmission.
An electromechanical actuator, comprising:
- a threaded spindle;
- a housing;
- a cage supported for rotation with respect to the housing by first rolling bearings;
- a nut supported for rotation with respect to the cage by second rolling bearings, the nut having internal annular grooves;
- and
- a plurality of stepped planets supported for rotation with respect to the cage, each planet having a first profiling corresponding to the spindle threads and a second profiling corresponding to the internal annular grooves.
Dependencies are inferred from the claim text.