Wheel suspension for an at least slightly actively steerable rear wheel of a two-track vehicle, axle comprising a wheel suspension, and vehicle comprising a wheel suspension
View Patent ↗A wheel suspension for an at least slightly actively steerable has a wheel carrier for receiving a wheel, a toe link, and at least one further link for connecting the wheel carrier to the vehicle body, and an actuator arrangement having at least one actuator for actively steering the wheel in a first active steering direction and in a second active steering direction. The wheel carrier is formed in at least two parts and has a first wheel carrier part and a second wheel carrier part. The first wheel carrier part is designed to receive the wheel and the second wheel carrier part can be attached via at least one of the further links to the vehicle body, in a non-actively steerable manner. The first wheel carrier part and the second wheel carrier part in a functional state of use of the wheel suspension in a vehicle are movable relative to one another by the actuator arrangement, such that an active, at least slight steering movement of the wheel can be effected.
1. A wheel suspension for an at least slightly actively steerable rear wheel of a two-track vehicle, comprising:
a wheel carrier for holding the wheel;
a toe link;
at least one further link for connecting the wheel carrier to a vehicle body; and
an actuator device with at least one actuator for actively steering the wheel in a first active steering direction and in a second active steering direction, wherein
the wheel carrier is formed in at least two parts and has a first wheel carrier part and a second wheel carrier part,
the first wheel carrier part is configured for holding the wheel and the second wheel carrier part is connectable by way of at least one of the further links to the vehicle body,
in a functional state of use of the wheel suspension in a vehicle, the first wheel carrier part and the second wheel carrier part are movable relative to one another by way of the actuator device such that an active, at least slight steering movement of the wheel is effected,
the toe link is articulated at a wheel carrier side on the first wheel carrier part and the actuator of the actuator device is coupled by way of the toe link to the first wheel carrier part,
the first wheel carrier part and the second wheel carrier part are mechanically connected to one another by two coupling devices which are configured to guide the first wheel carrier part and the second wheel carrier part in each case oppositely in a vehicle transverse direction during active steering,
a relative movement of the two wheel carrier parts with respect to one another effects a steering movement of the wheel about an active steering axis,
the active steering axis lies between the two coupling devices in a vehicle longitudinal direction, and
each coupling device of the two coupling devices comprises a slotted-link guide bolt and a corresponding slotted-link guide groove having a curved profile, with a center of curvature in the vehicle longitudinal direction between the slotted-link guide grooves.
2. The wheel suspension according to claim 1 , wherein
the first wheel carrier part and the second wheel carrier part are connected to one another pivotably about a pivot axis running substantially in a vehicle vertical direction, which pivot axis defines an active steering axis at least in a first defined active steering angle range and/or for the first active steering direction.
3. The wheel suspension according to claim 2 , wherein
the pivot axis is situated in front of a wheel center in a vehicle longitudinal direction.
4. The wheel suspension according to claim 3 , wherein
the toe link is articulated on the wheel carrier behind the wheel center in the vehicle longitudinal direction.
5. The wheel suspension according to claim 2 , wherein
at least one wheel carrier part has a guide device for at least partially guiding the other wheel carrier part.
6. The wheel suspension according to claim 5 , wherein
the guide device guides a free end of the other wheel carrier part, which free end is averted from the pivot axis.
7. The wheel suspension according to claim 1 , wherein
the wheel carrier has at least one stop in order to limit an active steering movement about the active steering axis in at least one active steering direction.
8. The wheel suspension according to claim 7 , wherein
the wheel suspension is configured such that, after the stop has been reached, the first wheel carrier part and the second wheel carrier part are movable jointly about a second steering axis during further steering, wherein the second steering axis is defined by a geometry and elastokinematics of the wheel suspension.
9. An axle for a two-track vehicle, comprising:
a left-hand wheel suspension and a right-hand wheel suspension, wherein
at least one of the left-hand and right-hand wheel suspensions is a wheel suspension according to claim 1 .
10. The axle according to claim 9 , wherein
the axle has the left-hand wheel suspension for a left-hand wheel and the right-hand wheel suspension for a right-hand wheel,
the left-hand wheel suspension and the right-hand wheel suspension have a common actuator, wherein, in a functional installed state of the axle in a vehicle, the first wheel carrier part and the second wheel carrier part of the left-hand wheel suspension are movable relative to one another by the common actuator such that an active, at least slight steering movement of the left-hand wheel can be effected, and wherein, at the same time, in a functional installed state of the axle in a vehicle, the first wheel carrier part and the second wheel carrier part of the right-hand wheel suspension are movable relative to one another by the common actuator such that an active, at least slight steering movement of the right-hand wheel in the same direction, can be effected.
11. A two-track motor vehicle, comprising at least one wheel suspension according to claim 1 .
12. A wheel suspension for an at least slightly actively steerable rear wheel of a two-track vehicle, comprising:
a wheel carrier for holding the wheel;
a toe link;
at least one further link for connecting the wheel carrier to a vehicle body; and
an actuator device with at least one actuator for actively steering the wheel in a first active steering direction and in a second active steering direction, wherein
the wheel carrier is formed in at least two parts and has a first wheel carrier part and a second wheel carrier part,
the first wheel carrier part is configured for holding the wheel and the second wheel carrier part is connectable by way of at least one of the further links to the vehicle body,
in a functional state of use of the wheel suspension in a vehicle, the first wheel carrier part and the second wheel carrier part are movable relative to one another by way of the actuator device such that an active, at least slight steering movement of the wheel is effected,
the toe link is articulated at a wheel carrier side on the second wheel carrier part and the actuator of the actuator device couples the first wheel carrier part to the second wheel carrier part,
the first wheel carrier part and the second wheel carrier part are mechanically connected to one another by two coupling devices which are configured to guide the first wheel carrier part and the second wheel carrier part in each case oppositely in a vehicle transverse direction during active steering,
a relative movement of the two wheel carrier parts with respect to one another effects a steering movement of the wheel about an active steering axis,
the active steering axis lies between the two coupling devices in a vehicle longitudinal direction, and
each coupling device of the two coupling devices comprises a slotted-link guide bolt and a corresponding slotted-link guide groove having a curved profile, with a center of curvature in the vehicle longitudinal direction between the slotted-link guide grooves.
13. The wheel suspension according to claim 12 , wherein
the actuator of the actuator device is connected to the first wheel carrier part and the second wheel carrier part and is at least partially arranged between the first wheel carrier part and the second wheel carrier part in a vehicle transverse direction.
14. The wheel suspension according to claim 12 , wherein
the actuator device has at least two actuators, and
the first wheel carrier part and the second wheel carrier part are coupled to one another by the two actuators of the actuator device.
15. The wheel suspension according to claim 14 , wherein
the first wheel carrier part and the second wheel carrier part are, for active steering, movable in each case oppositely in a vehicle transverse direction by the two actuators,
a relative movement of the two wheel carrier parts with respect to one another effects a steering movement of the wheel about an active steering axis,
the active steering axis is situated in front of a wheel center in a vehicle longitudinal direction in the case of active steering in a first active steering direction and is situated behind the wheel center in the case of active steering in a second active steering direction.
16. The wheel suspension according to claim 15 , wherein
the active steering axis lies at a level of the wheel center.