DE102015113153A1 - Active wheel carrier for a motor vehicle - Google Patents

Abstract

The invention relates to an active wheel carrier comprising an adjusting device with an adjusting shaft driven by an actuator for adjusting track and / or camber. The actuator has a torsionally rigid and simultaneously flexible soft output element, via which it is connected to the adjusting shaft and the other parts of the actuator of externally driven axial and / or radial movements of the adjusting shaft at least partially, in particular completely decoupled.

Description

The invention relates to an active wheel carrier comprising an adjusting device with an adjusting shaft driven by an actuator for adjusting track and / or camber.

Such a wheel carrier is made, for example DE 10 2004 049 296 A1 known. Specifically, this document discloses a mounted in a wheel hub unit for a wheel of a two-lane vehicle with a rotatably mounted about the wheel axle wheel flange, with the interposition of a circular cylindrical adjusting ring whose cylinder axis is inclined to the axis of the wheel, with respect to the wheel carrier about this cylinder axis rotatable in Wheel carrier is stored. The adjusting ring is mounted in a complementary ring which surrounds the adjusting ring and this is geometrically adapted so that the adjusting ring is rotatable about its cylinder axis relative to the Komplementärring and that the complementary ring around a so-called neutral axis, which coincides in a basic position of the adjusting ring with the wheel axle , is rotatably mounted ultimately in the wheel. About a rotation of these rings camber and / or lane of the wheel are adjustable, via an adjusting unit for rotating the adjusting ring and / or the complementary ring. In addition, the adjusting ring and / or the complementary ring may be mounted such that with a negative camber generating or increasing rotation of the adjusting a displacement of the wheel flange to the outside - approximately in the direction of the wheel axle - takes place.

Also from WO 98/16418 a device for angle adjustment for vehicle wheels is known. The device comprises a first bearing unit, which is rotatably mounted about a first axis and which carries a second bearing unit. The first bearing unit and the second bearing unit are in contact with each other in a plane inclined to the first axis.

DE 10 2008 048 568 A1 discloses a steering device with two rotary parts, which can be rotated for steering with simultaneous fall and / or track optimization. The steering device is constructed such that the actuator pivots a vehicle wheel about a steering angle, which can be predetermined via a steering angle sensor. The actuator has a wheel-side rotary member and an axle-side rotary member, which are rotatable about their axes of rotation to each other, wherein the wheel-side rotary member during rotation relative to the axle-side rotary member is deflected to create the steering angle of the vehicle wheel.

It is the object of the present invention to provide an active wheel carrier that allows a long-lasting precise and reliable adjustment of lane and / or camber.

The object is achieved by a wheel carrier of the aforementioned type, which is characterized in that the actuator has a torsionally rigid and simultaneously flexible soft output element, via which it is connected to the adjusting shaft and the other parts of the actuator of externally driven axial and / or radial Movements of the adjusting shaft at least partially, in particular completely, decoupled.

In accordance with the invention, it was first recognized that the actuator of an active wheel carrier not only has to apply the torque for adjusting the adjustment shaft, but also forces and torques are transmitted from the attached to the wheel carrier on the setting shaft on the actuator, which load the actuator , These forces and torques, which occur in particular when driving on uneven ground, when cornering or when braking, burden the actuator and in particular its bearings, whereby the life and the adjustment accuracy suffer. In accordance with the invention, apart from the output element, the remaining parts of the actuator are mechanically decoupled from these externally driven axial and / or radial movements of the adjusting shaft. In this way, these parts are spared, so that they can work precisely over a longer period of time.

In an advantageous embodiment, the actuator has a drive motor and a transmission downstream of the drive motor. In particular, it can be advantageously provided that the drive motor and the transmission are arranged in a common housing. Particularly robust is an embodiment in which the output element and the setting shaft are made together in one piece.

In a particularly compact design of the drive motor and the gearbox are arranged coaxially to each other. It may alternatively be provided that the drive motor and the gear are arranged axially parallel to each other. Such an embodiment makes it possible to adapt the actuator particularly good angular space conditions. In particular, in an axially parallel embodiment of the drive motor and the transmission can be advantageously operatively connected via a traction mechanism.

Alternatively, it is also possible that the drive motor and the transmission are arranged at an angle to each other. In this case, for example, toothed bevel gears can be used to couple the drive motor and the gear drive technology. The bevel gears, for example, a Cone angle of 45 degrees to order the drive motor and the gearbox at an angle of 90 degrees to each other.

In a particularly advantageous embodiment, the transmission is designed as a coaxial transmission with a arranged on the axis of symmetry of the coaxial transmission drive element and with a coaxially arranged circulation element, wherein the output element, the circulation element and a rotatably connected to the rotating element cup-shaped output bell has. For the purposes of the present application, a circulation element is understood to mean, in particular, a component which is arranged coaxially to the other transmission components and rotates about a central axis that is coaxial, without changing its position. In such an embodiment, during rotation, each component of the circulating element runs around the central axis of the central axis.

In particular, can be advantageously provided, the output element and / or the output bell, torsionally stiff to allow precise adjustment of track and / or camber. The output element, in particular the output bell, can be made torsionally rigid, in particular with respect to torques whose torque vector is axially aligned.

In order to achieve a decoupling of the remaining parts of the actuator, the output element, in particular the output bell, with respect to forces acting in the axial direction and / or in the radial direction, be designed to be elastic. In particular, it may be advantageously provided that the output element and / or the output bell, are formed pliable and / or that the output element and / or the output bell is formed elastically in the axial direction and / or in the radial direction.

By bending soft and torsionally stiff output element, which may include, for example, a preferably flexible and torsionally stiff, cup-shaped output bell, in particular in combination with a stationary mounting of the circulating element, for example in a designed as a voltage wave transmission gearbox Flexspline, and the wave generator and / or a Dynamicspline and / or a Hohlradlagerung effectively from the radial and / or axial movements, in particular tumbling movements, which executes the adjusting shaft, at least largely, are decoupled, without the backlash-free transferability of a torque from the transmission is adversely affected to the setting shaft. The Hohlradlagerung must therefore at most a small residual portion of the radial and / or axial movements, in particular tumbling movements record.

In particular, it may be advantageously provided that the circulation element bearing is designed as a plain bearing or as a roller bearing, and / or that the circulation element bearing supports the circulation element in the radial and / or axial direction relative to a housing of the transmission or of the actuator. Alternatively or additionally, it is also possible that the circulation element bearing radially surrounds the circulation element, and / or that the circulation element storage has the circulation element coaxial on its outer circumference surrounding sliding bearing or roller bearing. In a particular embodiment, the circulating element bearing has a plurality of supporting points surrounding the circulating element on its outer circumference. To prevent axial movements of the circulating element can be advantageously provided that the circulation element bearing rests on the circulating element.

In a particular embodiment of the transmission as a stress wave transmission, a stationary mounting of the circulation element, in particular a Circularsplines or a Dynamicsplines, on the storage of the wave generator and the Flexspline, so that the bearings of these components simultaneously form the circulation element storage. In such an embodiment, the output element is preferably formed particularly flexible so as to avoid overloading of the other components of the transmission.

The output element is preferably designed so elastically and the circulating element bearing dimensioned such that radial movements of the adjusting shaft in the range of 0 to 1/4000 of the diameter of the circulating element, in particular in the range of 0 to 1/2000 of the diameter of the circulating element, in particular in the range of 0 can occur to 1/1000 of the diameter of the circulating element, in particular in the range of 0 to 1/100 of the diameter of the circulating element, without these movements of the coupled adjusting shaft lead to a movement of the circulating element and without the output element is damaged.

Alternatively or additionally, the output element is preferably designed so elastically and the circulating element bearing dimensioned such that axial movements of the adjusting shaft in the range of 0 to 1/4000 of the diameter of the circulating element, in particular in the range of 0 to 1/2000 of the diameter of the circulating element, in particular Range of 0 to 1/1000 of the diameter of the circulating element, in particular in the range of 0 to 1/100 of the diameter of the circulating element, can occur without these movements of the coupled shaft lead to a movement of the circulating element and without the output element is damaged.

Preferably, the output member is rigidly configured with respect to forces acting in the tangential direction to provide torsional rigidity for the instantaneous transmission of torques to the adjustment shaft. Preferably, the output element has a torsional rigidity which is so great that the output element is twisted over its axial length by less than one radian, when a torque of 10,000 Nm, in particular 20,000 Nm, in particular 50,000 Nm, in particular of 100,000 Nm he is present.

In a particular embodiment of the transmission designed as a stress wave transmission or planetary gear, the radial distance from the root circle of the internal toothing of the ring gear to the outer circumference of the ring gear is more than four times greater, in particular more than ten times greater, in particular more than 25 times greater, than the wall thickness of the output bell and / or the wall thickness of the output bell in a bending region of reduced wall thickness. Such a design provides a particularly good balance of stability, flexural softness and torsional rigidity. Alternatively or additionally, the wall thickness of the output bell can be in particular 0.2 mm to 1.5 mm, in particular 0.3 mm to 0.7 mm, in particular 0.4 to 0.5 mm. Such a wall thickness is largely independent of the diameter of the ring gear advantageous.

In a particular embodiment, the quotient of the axial length of the ring gear and the axial length of the output bell in the range of 0.25 to 1.2, in particular in the range of 0.5 to 1.1. Alternatively or additionally, it can be advantageously provided that the quotient of the axial length of the ring gear and the axial length of a circular cylindrical section of the output bell in the range of 0.25 to 1.2, in particular in the range of 0.5 to 1.1. Such embodiments have the advantage that the ring gear for the torques to be transmitted is sufficiently wide and that there is sufficient for these torques torsional stiffness. This in particular if the output bell has the above-described wall thickness.

In a particular embodiment, the stress wave transmission is designed as a ring gear. In such an embodiment, the elastic Flexspline is not in the form of a pot, but in a ring shape (flex ring). Such a construction is advantageously especially axially particularly compact. In addition, such an embodiment of the stress wave transmission is particularly insensitive to radial and / or axial vibrations, in particular tumbling movements, the setting shaft. This in contrast to a design in top form because a Flextopf is not present, which is due to its flexibility and the oval deformation sensitive to radial loads, especially radial permanent loads, is. However, a design of the stress wave transmission with a Flextopf is basically possible.

A torsionally rigid design of the driven element can in particular be realized in that a substantially circular cylindrical portion of the driven bell corresponds to the largest possible diameter, in particular a diameter corresponding to the diameter of the circulating element or in the range of 0.8 times to 1.2 times the diameter of the circulating element lies, has. In addition, it can be advantageously provided that adjoins the circular cylindrical portion of a bottom portion, in particular in the form of a circular disc, which is arranged in a radial plane.

As also already mentioned, the output element, in particular a driven bell of the driven element, has a flexurally soft design in order to be able to compensate for the radial movements and / or axial movements, in particular tumbling movements, performed by the adjusting shaft. In particular, the output element may be designed to be elastic with respect to forces which act in the axial direction and / or in the radial direction. To achieve this, the bottom portion and / or the circular cylindrical portion may be formed wavy. In particular, the output element, in particular the output bell, have a bellows-shaped region. Preferably, the shafts are arranged concentrically to the circulation element and / or an output shaft.

In a particularly advantageous embodiment, in particular in an embodiment which has an output element produced in one piece from a raw material, no further device for decoupling radial and / or axial, in particular tumbling, movements of the adjusting shaft is connected between the setting shaft and the output element.

Of very particular advantage is an embodiment in which the output element, in particular the output bell of the output element, has no moving components. In particular, it can be advantageously provided that the output element, in particular together with the adjusting shaft, is integrally formed. The output element, in particular the output bell, can, in particular also together with the circulating element and / or an output shaft, be produced from a single piece of raw material, in particular in a cutting process, such as a turning process. A flexural softness with simultaneous torsional stiffness, for example, in an integrally produced output bell by a Bending section, which has a smaller wall thickness than the other sections of the output bell, be realized.

Also, regardless of whether the output element and / or the output bell has movable components or not, at least one bending section with a reduced wall thickness can be present to achieve bending softness with simultaneous torsional rigidity. In particular, the bending section can advantageously be arranged in a transition region from a circular cylindrical section to a bottom section.

A particularly effective decoupling can be achieved in a very general manner, for example, by the output element and / or the output bell having at least one bending section with a reduced wall thickness.

In a particular embodiment, the output element and / or the output bell on a circular cylindrical portion. In particular, the output bell may have a bottom portion extending in the radial direction. Hereby advantageously be provided that the bottom portion, in particular in the radial and / or radial direction, is elastic and / or that the bottom portion and / or the circular cylindrical portion is corrugated. In particular, the circular cylindrical portion and the bottom portion may merge into each other in an area having a reduced wall thickness.

In a particular embodiment, the output member has a rotatably connected to the output bell output shaft, which is preferably arranged on the axis of symmetry of the coaxial transmission. To the output shaft, the adjusting shaft can be coupled directly or indirectly. It is also possible that the output shaft integrally merges into the setting shaft or at the same time is the setting shaft.

In a space-saving and particularly robust design of the coaxial transmission, the circulating element and the output shaft are arranged at opposite ends of the output bell.

Particularly robust, as already mentioned, an embodiment in which the output bell is made in one piece together with the circulation element and / or in which the output element, in particular the output bell is made in one piece with the output shaft. For example, in a cutting process such as a turning process, the driven bell, and in particular the entire driven element, may be made from a single piece of raw material.

The output element may have a coupling element, in particular a flange, for coupling the adjusting shaft. The coupling element may in particular have a smaller diameter than the circulating element.

In a particular embodiment, the output element and / or the output bell are formed as a radially flexible and / or transversely to the axial direction bendable and on the other hand torsionally rigid coupling.

As already mentioned, the circulating element can advantageously, in particular exclusively, be arranged in a sliding manner. Such a design is particularly robust and solid. In particular, such a design can be designed such that, despite the flexural softness coupled via the transmission output, radial and / or axial movements over the slide bearing and other components of the active wheel carrier directly or indirectly, for example, in a support member or a suspension or body are derived. A slide bearing also has the very special advantage that it can be made very robust and beyond that is inexpensive to produce. Such an embodiment of the active wheel carrier also has the advantage that it is particularly durable and the initially described effects of unwanted forces and / or torques, which ultimately lead to premature wear, can be effectively avoided.

As already mentioned, the coaxial transmission can advantageously be designed as a voltage wave transmission.

A stress wave transmission is usually constructed to include a rigid, circular and internally toothed ring gear, referred to as a circular spline, and a radially flexible externally toothed gear located inside the rigid internally toothed ring gear, referred to as a flexspline. In the externally toothed gear, a generally elliptical wave generator is rotatably arranged by means of a rolling bearing deforming the radially flexible externally toothed gear into an elliptical shape to engage the gears of the internal gear and the radially flexible external gear on each end of the ellipse main axis. In addition, another internally toothed ring gear, namely a Dynamicspline having the same number of teeth as the Flexspline, can be in operative engagement with the Flexspline.

The use of a backlash-free transmission, in particular a stress wave transmission, is particularly advantageous because the transmitted, disturbing movements of the adjusting shaft all the more less lead to a knockout, the lower the gear play is. In a backlash-related gearbox, the already initially existing game can increasingly increase due to the above-mentioned undesired torques and forces. Nevertheless, the use of a geared gear due to the above-described mechanical decoupling quite possible and justifiable.

In a special embodiment of the coaxial transmission designed as a voltage wave transmission, the flexspline always remains in the same rotational position, in particular relative to a housing of the transmission or of the actuator. In particular, it can be advantageously provided that the Flexspline by means of a housing-fixed, internally toothed Dynamicspline having the same number of teeth as the Flexspline, is held in its rotational position fixed to the housing. Alternatively, it can also be provided that the Flexspline is attached directly to the housing.

As already mentioned, the coaxial transmission can be designed as a stress wave transmission, it being possible in particular to provide that the circulation element is a circular splint or a dynamics spline, and / or that the drive element is a wave generator or has a wave generator. It is alternatively also possible for the coaxial transmission to be a stress wave transmission and for the circulation element to be a flexspline. In particular, the coaxial transmission may be a voltage wave transmission, wherein the drive element is a wave generator or has a wave generator.

Alternatively, for example, be provided that the coaxial transmission is a planetary gear. It can be provided in particular that the circulating element is a planet or a ring gear of the planetary gear and / or that the drive element is a sun gear or a sun gear.

In a particularly advantageous manner, the active wheel carrier, a locking device and / or a brake for blocking or braking a rotational movement of a rotary member of the actuator, in particular a shaft of the transmission and / or the output shaft of the drive motor and / or the adjusting shaft, have to prevent in that the camber angle and / or the toe angle change unintentionally when the vehicle is parked. In this case, it can be provided in particular advantageous that the locking device and / or the brake is automatically closed in the electrically de-energized state.

The locking device may for example - regardless of a power supply - be designed bistable; namely such that a set switching state (locking position or release position) of the permanent magnet assembly is reliably maintained until the locking member is switched to the other switching state.

The active wheel carrier may advantageously have several, in particular exactly two, of the above-described actuators. In particular, it can be advantageously provided that the active wheel carrier has an axis-side adjusting element rotatable about an adjusting axis relative to an axle-side carrier and a wheel-side adjusting element rotatable relative to the axle-side adjusting element. In this case, provision may in particular be made for the adjusting elements to be in contact with one another at contact surfaces in a contact plane which has an angle other than 90 degrees to the setting axis. The axle-side support may in particular be designed to hold components of the wheel carrier, in particular the actuator, and, in particular movably but non-rotatably, to be fastened in a wheel suspension or a vehicle body.

In addition, it can be advantageously provided that the actuator serves to drive the wheel-side actuator rotationally while another actuator serves to drive the axle-side actuator rotationally. In such an embodiment, the surface normal of the wheel disc of a coupled to the wheel-side actuator via a wheel bearing within a limited by a conical shell space by appropriate control of the actuators of the control elements can be arbitrarily aligned. The opening angle of the conical shell and thus the adjustment range are determined by the angle of the contact plane relative to the adjustment axis. The further actuator may for example be held by a wheel-side carrier, which is arranged to the axle-side support movable, but rotatably.

The adjusting shaft can be operatively connected directly or via a coupling mechanism with at least one actuating element of the active wheel carrier. The output element and / or the adjusting shaft may advantageously carry, for example, a gear of a coupling gear, which produces an operative connection to at least one actuating element of the active wheel carrier.

The actuator can advantageously have a rotary position sensor, with which the respective current rotational position of the output element and / or the adjusting shaft can be determined. In a particularly advantageous manner, the rotary position sensor can be integrated in the transmission and / or in the drive motor. Alternatively or additionally, it may also be provided that the rotary position sensor with the transmission and / or the drive motor in one common housing is arranged. From the measurement signal of the rotary position sensor can be closed to the current setting of the toe angle or the camber angle.

In particular, it can be advantageously provided that both the actuator and the further actuator each have a rotary position sensor. From the measurement signals of the rotary position sensors can be closed to the current setting of the toe angle and the camber angle.

The wheel carrier according to the invention can also be used for steering. In this case, in each case the toe angle of two wheels of a vehicle axle is simultaneously changed in the same direction. Of particular advantage is a chassis for a motor vehicle having at least one active wheel according to the invention. Also particularly advantageous is a vehicle having at least one active wheel according to the invention.

In the drawing, the subject invention is exemplified and shown schematically and will be described with reference to the figures below, wherein the same or equivalent elements are usually provided with the same reference numerals. Showing:

1 An embodiment of an active wheel carrier according to the invention in zero position of track and camber,

2 the embodiment in a different setting,

3 A first embodiment of an actuator of an active wheel carrier according to the invention,

4 A second embodiment of an actuator of an active wheel carrier according to the invention,

5 A third embodiment of an actuator of an active wheel carrier according to the invention,

6 A fourth embodiment of an actuator of an active wheel carrier according to the invention,

7 An embodiment of a designed as a voltage wave transmission gearbox of an actuator of an active wheel carrier according to the invention,

8th an embodiment of another designed as a voltage wave transmission gearbox of an active wheel carrier according to the invention, and

9 An embodiment of a designed as a planetary gear transmission of an actuator of an active wheel carrier according to the invention.

1 shows an embodiment of an active wheel carrier according to the invention. The active wheel carrier includes a first adjustment device 1 with one of an actuator 2 driven adjusting shaft 3 for adjusting lane and / or lintel over a wheel bearing 19 to the active wheel carrier coupled wheel, of which in the figure only schematically a part of the wheel disc 4 is indicated.

The actuator 2 has a drive motor 5 and a drive motor 5 downstream transmission 6 on. In addition, the actuator indicates 2 a torsionally rigid and at the same time flexible soft drive element 7 on, about which he is at the setting shaft 3 connected and that the remaining parts of the actuator 2 externally driven axial and / or radial movements of the setting shaft 3 at least partially decoupled.

The adjusting shaft 3 carries a gear 14 that with a counter gear 15 an axle-side control element 16 combs. The gear 14 and the counter gear 15 form a coupling gear 17 , which has an operative connection between the actuator 2 and the actuator 16 manufactures. With the actuator 2 can the actuator 16 relative to a non-illustrated axle-side support about an adjustment axis 18 to be turned around.

The active wheel carrier also includes another adjustment device 8th with another actuator 9 , The further actuator 9 has a further drive motor 10 and a further drive motor 10 downstream, further transmission 11 on. In addition, the other actuator has 10 another, torsionally rigid and at the same time soft bending output element 12 via which it is connected to a further adjustment shaft 13 is connected and that the remaining parts of the further actuator 9 externally driven axial and / or radial movements of the further adjustment shaft 13 at least partially decoupled.

The further adjustment shaft 13 carries another gear 20 that with another counter gear 21 a wheel-side actuator 22 combs. The other gear 20 and the other counter gear 21 form another coupling gear 23 that an operative connection between the further actuator 9 and the actuator 16 manufactures. With the further actuator 9 can the other actuator 22 relative to a wheel-side support, not shown, about a further adjustment axis 24 , Which in the adjustment of the setting elements shown to each other coaxial with the adjustment axis 18 is aligned, rotated.

The axle-side actuator 16 and the wheel-side actuator 22 are at contact surfaces in a contact layer 25 in contact with each other, one of 90 Degrees different angles to the adjustment axis 18 having. The orientation of the surface normals of the wheel disc 4 - And thus the toe angle and the camber angle - can be within a limited by a conical shell space by suitable control of the actuators 2 . 9 set as desired. The opening angle of the cone shroud and thus the adjustment range is determined by the angle of the contact plane 25 relative to the adjustment axis 18 established.

2 shows that already in 1 illustrated embodiment at a different setting of the rotational position of the adjusting elements 16 . 22 , In the illustrated rotational position, the adjustment axes 18 . 23 an angle different from each other at zero degrees.

3 shows a first embodiment of an actuator 2 an active wheel carrier according to the invention. The actuator 2 has a drive motor 5 on, among other things, a rotor 43 and a stator 26 includes. The actuator 2 also has a drive motor 5 downstream transmission 6 on, which is designed as a coaxial transmission, namely concretely as a stress wave transmission.

The stress wave transmission includes a via a drive shaft 33 with the rotor 25 rotatably coupled drive element, namely a wave generator 27 that by means of a rolling bearing 28 rotatable within an externally toothed flexspline 29 is arranged and the the Flexspline 29 bent to an elliptical shape to the outer teeth with the internal teeth of a Circularspline 30 and a Dynamicspline 31 at each end of the ellipse main axis. The Dynamicspline 31 is relative to a housing 32 of the actuator 2 arranged rotationally fixed.

The Circularspline 30 forms a circulation element, with a cup-shaped output bell 34 rotatably connected. The output bell 34 is both torsionally stiff (especially with respect to torques whose torque vector is axially aligned), as well as flexible (especially with respect to forces acting in the axial direction and / or in the radial direction) is formed. In that regard, the output bell forms 34 together with the Circularspline 30 a torsionally rigid and at the same time flexible soft drive element 7 that with an adjustment shaft 3 rotatably connected and that the remaining parts of the actuator 2 externally driven axial and / or radial movements of the setting shaft 3 at least partially decoupled. The adjusting shaft 3 carries a gear 14 for coupling to a (not shown in this figure) actuator 16 . 22 ,

The actuator 2 also has a rotary position sensor arranged on the motor side 35 on, with which the current rotational position of the drive shaft 33 can be determined. From the drive shaft 33 can on the rotational position of the setting shaft 3 getting closed.

4 shows a second embodiment of an actuator 2 an active wheel carrier according to the invention, which differs from that in 3 illustrated embodiment by the installation position of the rotary position sensor 35 different. In this embodiment, the rotary position sensor is 35 Gearbox output side arranged so that directly the rotational position of the setting shaft 3 can be measured.

5 shows a third embodiment of an actuator 2 an active wheel carrier according to the invention, which differs from that in 3 illustrated embodiment by a transmission input side arranged locking device 36 for blocking a rotational movement of the drive shaft 33 different.

6 shows a fourth embodiment of an actuator 2 an active wheel carrier according to the invention, which differs from that in 5 illustrated embodiment differs in that the locking device 36 for blocking a rotational movement of the drive shaft 33 on the gearbox 6 opposite side of the engine 5 is arranged.

7 shows an embodiment of a designed as a voltage wave transmission gearbox 6 an actuator 2 an active wheel carrier according to the invention with a wave generator 27 and an externally toothed flexspline 29 , The wave generator 27 is by means of two rolling bearings 28 rotatable in the annular flexspline 29 stored and deformed this. The Flexspline 29 engages with its external teeth both in the internal teeth of a Dynamicsplines 31 , as well as in the internal toothing of a Circularsplines 30 , one. The Dynamicspline 31 has a hole 37 on to this by means of a screw in a housing 32 rotatably to attach.

The stress wave transmission has an output element 7 on, that the Circularspline 30 and a non-rotatably connected cup-shaped output bell 34 , as well as an output shaft 38 having. The output bell 34 is in one piece together with the Circularspline 30 and the output shaft 38 that the adjusting shaft 3 may be or non-rotatable with the setting shaft 3 can be connected. The output bell 34 is flexible and at the same time torsionally stiff.

8th shows an embodiment of another designed as a voltage wave transmission gearbox 6 an active wheel carrier according to the invention, which in the basic structure of the in 7 shown voltage wave transmission corresponds and in a housing 32 is arranged. The Dynamicspline 31 is rotationally fixed in the gear housing 32 attached during the Circularspline 30 via a slide bearing, not shown in this figure, relative to the transmission housing 32 is rotatably mounted.

The stress wave transmission has an output element 7 on, that the Circularspline 30 and a non-rotatably connected cup-shaped output bell 34 , as well as an output shaft 38 having. The output bell 34 is in one piece together with the Circularspline 30 and the output shaft 38 produced. The output shaft 38 is designed as a hollow shaft and rotatably with the setting shaft 3 connected. The output bell 34 is flexible and at the same time torsionally stiff.

7 shows an embodiment of a designed as a planetary gear transmission 6 an actuator 2 an active wheel carrier according to the invention. The planetary gear has a sun gear as the drive element 39 on, which is rotated by a drive motor, not shown in rotation. On a housing-fixed planet carrier 40 are several planet gears 41 arranged in mesh with the sun gear 39 stand. The planet wheels 41 are together with the sun wheel 39 within an internally toothed ring gear 42 arranged, with which they are in mesh.

The planetary gear has an integrally manufactured output element 35 on that the ring gear 42 and a non-rotatably connected cup-shaped output bell 34 , as well as an output shaft 38 having. The output bell 34 is integral with the ring gear 42 and the output shaft 38 produced. The output bell 34 is flexible and at the same time torsionally stiff.

LIST OF REFERENCE NUMBERS

1

 first adjusting device

2

 actuator

3

 adjusting

4

 wheel disc

5

 drive motor

6

 transmission

7

 output element

8th

 further adjustment device

9

 another actuator

10

 another drive motor

11

 another gear

12

 another output element

13

 further setting shaft

14

 gear

15

 against gear

16

 Axial actuator

17

 coupling gear

18

 adjust axis

19

 Wheel bearings

20

 another gear

21

 another against gear

22

 Radseitiges actuator

23

 another coupling gear

24

 further adjustment axis

25

 Contact level

26

 stator

27

 wave generator

28

 roller bearing

29

 flexpline

30

 Circularspline

31

 Dynamicspline

32

 casing

33

 drive shaft

34

 bell output

35

 Rotary position sensor

36

 locking device

37

 drilling

38

 output element

39

 sun

40

 planet carrier

41

 planet

42

 ring gear

43

 rotor

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102004049296 A1 [0002]
• WO 98/16418 [0003]
• DE 102008048568 A1 [0004]

Claims (21)

Active wheel carrier comprising an adjusting device with an adjusting shaft driven by an actuator for setting lane and / or camber, characterized in that the actuator has a torsionally rigid and simultaneously flexible soft output element, via which it is connected to the adjusting shaft and the other parts of the actuator decoupled from externally driven axial and / or radial movements of the adjusting shaft at least partially. Active wheel carrier according to claim 1, characterized in that a. the actuator has a drive motor and a gear downstream of the drive motor, and / or that b. the actuator has a drive motor and a drive connected downstream of the drive motor, wherein the drive motor and the transmission are arranged in a common housing, and / or that c. the actuator comprises a drive motor and a drive connected downstream of the drive gear, wherein the output element and the adjusting shaft are made together in one piece, and / or that d. the actuator has a drive motor and a drive connected downstream of the drive gear, wherein the drive motor and the gear are arranged coaxially to each other or that the drive motor and the gear are arranged axially parallel to each other. Active wheel carrier according to claim 2, characterized in that the transmission is designed as a coaxial transmission with a arranged on the axis of symmetry of the coaxial transmission drive element and with a coaxially arranged circulation element, wherein the output element, the circulation element and a non-rotatably connected to the circulation element connected cup-shaped output bell. Active wheel carrier according to one of claims 1 to 3, characterized in that a. the output element and / or the output bell is formed torsionally rigid, or that b. the output element, in particular the output bell, with respect to torques whose torque vector is axially aligned, torsionally stiff, and / or that c. the output element, in particular the output bell, is designed to be elastic with respect to forces which act in the axial direction and / or in the radial direction. Active wheel carrier according to claim 1 to 4, characterized in that a. the output element and / or the output bell, bendable are formed or that b. the output element and / or the output bell are formed elastically in the axial direction and / or in the radial direction. Active wheel carrier according to one of claims 1 to 5, characterized in that the output element and / or the output bell is designed as a radially flexible and / or transversely to the axial direction bendable and torsionally stiff coupling on the other hand. Active wheel carrier according to one of claims 1 to 6, characterized in that the output element and / or the output bell has at least one bending section with a reduced wall thickness. Active wheel carrier according to one of claims 1 to 7, characterized in that the output element and / or the output bell has a circular cylindrical portion and / or that the output bell has a extending in the radial direction bottom portion. Coaxial gear according to claim 8, characterized in that a. the bottom portion, in particular in the radial and / or radial direction, is elastic and / or that b. the bottom portion and / or the circular cylindrical portion is corrugated and / or that c. the circular cylindrical portion and the bottom portion merge into each other in an area having a reduced wall thickness. Active wheel carrier according to one of claims 3 to 9, characterized in that a. the output element has an output shaft rotatably connected to the output bell, and / or that b. the output element has a arranged on the axis of symmetry of the coaxial transmission and rotatably connected to the output bell output shaft. Active wheel carrier according to claim 10, characterized in that the circulating element and the output shaft are arranged at opposite ends of the output bell. Active wheel carrier according to one of claims 3 to 11, characterized in that a. the output bell is made in one piece together with the circulating element, and / or that b. the output element and / or the output bell is produced in one piece together with the output shaft, and / or that c. the output element has a coupling element, in particular a flange, for coupling the shaft, and / or that d. the output element has a coupling element, in particular a flange, for coupling the shaft, which has a smaller diameter than the ring gear. Active wheel carrier according to one of claims 3 to 12, characterized in that a. the circulating element by means of a circulation element storage, in particular exclusively, is slidably mounted, and / or that b. the circulation element by means of a circulation element bearing relative to a housing of the actuator or the transmission and / or rotatable relative to the axis of symmetry of the transmission, but stationary, is mounted. Arrangement according to claim 13, characterized in that a. the circulation element bearing is designed as a slide bearing or as a roller bearing, and / or that b. the circulation element bearing supports the circulation element in the radial and / or axial direction relative to a housing of the stress wave transmission, and / or that c. the circulation element bearing radially surrounds the circulation element, and / or that d. the circulating element bearing has at least one sliding bearing or rolling bearing surrounding the circulating element coaxially on its outer circumference and / or that e. the circulating element bearing has a plurality of supporting points surrounding the circulating element on its outer circumference, and / or that f. the circulation element bearing rests axially on the circulation element. Active wheel carrier according to one of claims 3 to 14, characterized in that a. the coaxial transmission is a stress wave transmission, and / or that b. the coaxial transmission is a stress wave transmission and the circulation element is a circular spline or a dynamics spline, and / or that c. the coaxial transmission is a stress wave transmission and the circulation element is a flexspline, and / or that d. the coaxial transmission is a voltage wave transmission and the drive element is a wave generator or has a wave generator. Active wheel carrier according to one of claims 2 to 15, characterized in that a. the transmission is a planetary gear and / or that b. the transmission is a planetary gear and the circulating element is a planet carrier or a ring gear and / or that c. the transmission is a planetary gear and the drive element is a sun gear or a sun gear. Active wheel carrier according to one of claims 1 to 16, characterized by a locking device and / or a brake for blocking a rotational movement of a rotary component of the actuator. Active wheel carrier, characterized by a further actuator having the additional feature of any one of claims 2 to 18. Active wheel carrier according to one of claims 1 to 18, characterized in that a. the active wheel carrier has an axle-side adjusting element rotatable about an adjusting axis relative to an axle-side carrier and a wheel-side adjusting element rotatable relative to the axle-side adjusting element, and / or that b. the active wheel carrier has an axle-side adjusting element rotatable about an adjusting axis relative to an axle-side carrier and a wheel-side adjusting element rotatable relative to the axle-side adjusting element, wherein the adjusting elements are in contact with each other at contact surfaces in a contact plane having an angle different from 90 degrees to the adjusting axis and / or that c. the active wheel carrier has a wheel-side actuator and an axle-side actuator, wherein the actuator serves to drive the wheel-side actuator rotationally, while another actuator serves to drive the axle-side actuator rotationally, and / or that d. the adjusting shaft is operatively connected via a coupling mechanism with an actuating element of the active wheel carrier and / or that the setting shaft is operatively connected via a further coupling mechanism with a further adjusting element of the active wheel carrier. Chassis for a motor vehicle having at least one active wheel carrier according to one of claims 1 to 19. Vehicle having at least one active wheel carrier according to one of claims 1 to 19.

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