US 9,789,898 B2Granted

Angle superimposition apparatus for a vehicle steering device

AssigneeThyssenkrupp Presta AG

InventorRobert Galehr

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Abstract

An angle superimposition apparatus for a vehicle steering device with a planetary gear. The apparatus includes—a first shaft and a second shaft, which are arranged in a longitudinal direction so as to be rotatable relative to one another about the common longitudinal axis thereof. —A carrier arrangement is fixedly arranged to the body shell, on which carrier arrangement the first shaft and the second shaft and a rotor shaft are at least partially mounted and positioned so as to be rotatable. —An auxiliary drive with a stator is arranged on the carrier arrangement and with a rotor shaft, having a rotor, mounted rotatably and arranged coaxially with respect to the longitudinal axis and one of the shafts. —A planetary gear having a worm, which is arranged as a sun wheel so as to be rotatable about an axis of rotation and is arranged on the rotor shaft.

Claims19

Dependent claims

An angle superposition device for a vehicle steering apparatus, the angle superposition device comprising:

a first shaft that rotates about a first axis;
a second shaft that rotates about a second axis, the first and second axes defining a common longitudinal axis;
a servo drive collectively comprising a rotor and a stator, the rotor having a rotor shaft that is configured for rotation about the longitudinal axis;
a carrier arrangement that at least partially supports the first shaft, the second shaft and the rotor shaft;
a planetary gear set having:
a planet carrier;
an internal gear;
and
at least two planet gears arranged for rotation on the planet carrier and meshed for rotation to the internal gear and a worm gear, wherein one of the planet carrier and internal gear is rotatably coupled to the first shaft and the other of the planet carrier and internal gear is rotatably coupled to the second shaft;
and
wherein the servo drive superimposes a rotational movement transmitted between the first and second shafts.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/759,064Filed 9 Sep 2013
Priority: CH 0103/139 Jan 2013
Published: US 2016/0297469 A113 Oct 2016
Granted: 17 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

B62D 5/008
Power-assisted or power-driven steering: changing the transfer ratio between the steering wheel and the steering gear by variable supply of…
B62D 3/04
Mechanical: of worm type
B62D 5/0454
Conversion of rotational into longitudinal movement: worm gears
F16H 1/30
With gears having orbital motion: in which an orbital gear has an axis crossing the main axis of the gearing and has helical teeth or is a worm