DE102020106536A1 - Epicyclic automotive drive wheel - Google Patents

Abstract

Epicyclic gear drive wheel (2) with a drive shaft which can be driven by a drive motor to provide drive power, a drive sun gear (6) of an epicyclic drive gear, which is part of the epicyclic gear drive wheel (2), being drivable with the drive power provided and wherein the drive epicyclic gear has a drive ring gear (22) and a first and a second drive planetary gear (7, 8), the drive sun gear (6), for transmitting the drive forces, about a sun gear axis ( 18) is rotatably mounted, and the drive forces can be transmitted from this drive sun gear (6) to these drive planetary gears (7, 8) and the drive forces via these drive planetary gears (7, 8) to the drive ring gear ( 22) are transferable and wherein the drive ring gear (22) for transmitting the driving forces to a drivable output gear around a ring gear axis (17) which is aligned orthogonally to a drive plane et is rotatable, the output gear and the drive ring gear (22) being arranged concentrically to one another and torsionally rigidly connected to one another, characterized in that the first drive planet gear (7) about a first planet gear axis (9) on a first planet gear swivel arm (10) is rotatably mounted and that the first planetary gear pivot arm (10) is pivotably connected to a first pivot arm mounting point with a first guide arm (12) and that the first guide arm (12) opposite the first drive ring gear (22) with a first arm guide (14) and that the second drive planetary gear (8) is rotatably mounted about a second planetary gear axis (25) on a second planetary gear swivel arm (11) and that the second planetary gear swivel arm (11) at a second swivel arm mounting point with a second guide arm (13 ) is pivotally connected and that the second guide arm (13) is guided on the drive ring gear (22) with a second arm guide (15).

Description

The invention relates to an epicyclic drive wheel, the use of an epicyclic gear in the drive of a motor vehicle is from the DE 10 2009 036 890 A1 known.

The invention is explained below in connection with an electrically drivable motorcycle; this is not to be understood as a restriction of the invention to such an embodiment or application of the invention.

An electrically drivable motorcycle has an electromechanical energy converter for providing drive power to overcome driving resistance. By means of a drive train, the drive forces provided by this energy converter can be transmitted to the driven wheel, which is designed as a wheel tire, the drive forces being transmitted to a road surface by means of the wheel tire. Different embodiments are known for the drive train, for example a belt or chain transmission, this can advantageously be used to overcome a large distance from the drive motor arranged in the vehicle frame to the wheel hub of the driven wheel. A so-called cardan drive shaft is also known for the same purpose. In an electrically powered motorcycle, however, the arrangement of the drive motor in the vehicle frame and thus away from the drive wheel is no longer mandatory; rather, the drive motor can be relocated to the drivable wheel tire and a larger energy store can be arranged in the vehicle frame. A wheel hub motor is a drive motor which is arranged inside the drivable wheel tire and makes use of the drive architecture just explained. An electric motorcycle drive with a wheel hub motor, however, leads to a high wheel-sprung mass, since a suspension movement moves the wheel hub motor with it.

Against this background, the object of the invention is to specify a drivable wheel, a so-called epicyclic drive wheel, with improved operating properties. This object is achieved by an object according to claim 1; preferred developments are the object of the dependent claims.

An epicyclic drive wheel is to be understood as a drivable wheel for a machine, system or a motor vehicle, the epicyclic drive wheel in a motor vehicle having a so-called wheel tire as the output wheel. Such a wheel tire can preferably be understood as an in particular metallic rim with a pneumatic tire, as is customary in motor vehicle construction, or as a metal wheel, as is customary in rail vehicle construction.

To absorb the drive forces, in particular to overcome driving resistance, the epicyclic drive wheel, especially if it is designed as an epicyclic motor vehicle drive wheel, has a drive shaft and this is preferably coupled or can be coupled to a drive motor. This drive motor is preferably designed as an electromechanical energy converter and the epicyclic drive wheel preferably also has this drive motor, and the drive shaft is preferably designed as a motor shaft of this drive motor. This drive motor is preferably designed as an electric motor and preferably as an electric motor / generator. This drive motor can be used to drive the drive shaft and, by means of this, a drive sun gear, preferably indirectly and preferably directly. Indirect drive in this sense means that a transmission gear is arranged in the torque transmission direction between the drive motor and the drive sun gear, or preferably a torque transmission device, preferably a vibration damper or preferably a selectively switchable clutch device. Furthermore, in this sense, the direct drive is to be understood as meaning that the drive sun gear is permanently and directly coupled to the drive motor.

In addition to the drive sun gear, the epicyclic drive gear has a drive ring gear with a ring gear axis about which it can be rotated for driving the vehicle, and a first and a second drive planetary gear. Such a drive planetary gear is preferably in contact with both the drive ring gear and the drive sun gear for torque transmission. The epicyclic drive gear is also preferably designed as a gear drive and the drive planetary gears preferably mesh both with the drive sun gear and with the drive ring gear for torque transmission. More preferably, a plurality of drive planetary gears are provided so that torque is transmitted from the drive sun gear to the drive ring gear via one of at least two or, in particular, several drive planetary gears; the several drive planetary gears preferably form a gear chain.

Furthermore, the drive sun gear is rotatably mounted about a sun gear axis for transmitting the drive forces and preferably braking forces, in particular in connection with an electric motor drive, in particular in the case of a direct power transmission, this sun gear axis coincides with a rotation axis of the Drive motor together. In a classic epicyclic gear, this sun gear axis forms the central axis of the epicyclic gear, but in the proposed epicyclic gear drive wheel, the sun gear axis can also be radially displaced from the center of the drive ring gear or coincide with this and in particular the sun gear axis is opposite the center of the drive ring gear is movable or displaceable in the radial direction in the scheduled operation of the epicyclic geared motor vehicle. In particular, the radial mobility of the sun gear axis relative to the ring gear axis enables a suspension movement, this movement preferably being made possible by at least one spring element or at least one damper element or by both (spring and damper element) of the epicyclic gear drive wheel, such as this occurs especially when driving over uneven ground. Furthermore, the drive forces from this drive motor can be transferred from the drive sun gear to the drive planetary gears or preferably a chain of drive planet gears, the drive forces from these drive planet gears being transferable to the drive ring gear. Further preferably, a further drive sun gear with a diameter that differs from the drive sun gear is provided parallel to the drive sun gear, which is coupled to further first and second drive planetary gears with the drive ring gear, or for torque transmission from the further drive Sun gear is coupled to the drive ring gear. In particular, by means of such a configuration it is possible to selectively transmit drive power from the drive motor with different gear ratios to the drive ring gear. In particular, with such an embodiment it is possible to produce at least two gears for the power transmission from the drive motor to the drive ring gear.

Furthermore, the drive ring gear is set up to transmit the drive forces to the drivable wheel tire or some other device for outputting the drive forces, a so-called driven wheel. In particular, the output gear can be understood as a generic term which also includes the special shape of the wheel tire as the output gear. Such a wheel tire is also set up to deliver the driving forces to a road surface.

The output gear is preferably rotatable about the ring gear axis, which is aligned orthogonally to a drive plane. More preferably, the sun wheel axis is also oriented orthogonally to this drive plane.

The drive ring gear and the driven gear are preferably connected to one another in a torsionally rigid manner. Further preferably, the drive ring gear can be designed as a rim or as a component directly connected to it. The drive ring gear preferably forms a radially inner region of a rim, a tire, preferably a pneumatic tire, being arranged radially on the outside of this rim. Figuratively, the drive ring gear can preferably be understood as a ring gear toothing introduced into a so-called rim well. In particular, due to the explained configuration and connection of the drive ring gear to the output gear, the drive ring gear and the output gear are arranged concentrically and at least axially parallel to one another and are connected to one another in a rotationally rigid manner. Turned differently, the axis around which the wheel tire rotates when transferring drive forces to a road surface forms the ring gear axis.

It is proposed that the first drive planetary gear be rotatably mounted about a first planetary gear axis on a first planetary gear pivot arm and the first planetary gear pivot arm is pivotably connected to a first guide arm at a first pivot arm mounting point. Furthermore, the first guide arm is guided on or opposite the first drive ring gear with a first arm guide. It is also proposed that the second drive planetary gear be rotatably mounted about a second planetary gear axis on a second planetary gear pivot arm and the second planetary gear pivot arm is pivotably connected to a second guide arm at a second pivot arm mounting point. Furthermore, the second guide arm is guided on the drive ring gear or opposite the drive ring gear with a second arm guide. In addition, the first and the second planetary gear pivot arm are rotatably mounted about a common pivot point, this common pivot point coinciding with the sun gear axis. In particular, due to the explained kinematics (guidance of the two guide arms opposite / on the drive ring gear, connection of the planetary gear swivel arm with the guide arm and rotatable mounting of both planetary gear swivel arms in a pivot point that coincides with the sun gear axis), the distance between the centers of the two drive planetary gears is from the center point of the drive sun gear set and further the distance between the drive planetary gears relative to the drive ring gear is set. In particular, this kinematics makes it possible for the drive ring gear to move in the drive plane with respect to the drive sun gear and nevertheless a “clean” power transmission from the drive motor via the explained gears to the output gear, in particular the wheel tire, takes place. In particular, this displaceability of the ring gear axis relative to the sun gear axis enables a suspension movement of the output gear, differently turned, the drive motor can be held in a stationary manner on a vehicle frame and the suspension movement required, in particular for comfort requirements, is provided by the explained kinematics. In particular, the proposed epicyclic gear drive wheel enables a wheel drive for motor vehicles with improved operating behavior.

In a preferred embodiment, the first planetary gear axis and the first swivel arm support point coincide as the axis of the rotary connection of the first planetary gear swivel arm and the first guide arm, and more preferably also the second planetary gear axis and the second swivel arm support point, i.e. the axis of the rotary connection of the second Planetary swivel arm and second guide arm, together. In particular, such a configuration proves to be particularly advantageous, since the above-mentioned conditions, which are of particular importance when the epicyclic drive is designed as a gear drive, can be reliably met and an “center distance error” between the gears is prevented or reduced.

In a preferred embodiment of the invention, the sun wheel axis is arranged eccentrically to the ring gear axis in a rest mode of the epicyclic gear drive wheel. In particular, a rest mode in this sense is to be understood as a state of the epicyclic gear drive wheel in which it is not driven and further preferably this state is an unloaded state and more preferably the rest mode is a state in which the epicyclic gear drive wheel is not driven and is stressed by the planned load in the installed state, in particular a state which would result if the epicyclic drive wheel in a stationary motor vehicle, preferably without a passenger and preferably with a passenger, in which context a vehicle driver is to be understood as a passenger, would be arranged. In particular with such an eccentric configuration of the two axes mentioned, the center of gravity of the motor vehicle can be influenced by the epicyclic drive wheel.

In a preferred embodiment, at least one or preferably a plurality of planetary gear spring elements is provided. This planetary gear spring element is furthermore preferably arranged “between” these planetary gear swivel arms.

This planetary gear spring element is preferably arranged “between” the drive planetary gears or their axes of rotation and, more preferably, the planetary gear spring element is arranged remotely from the planetary gear axis directly on the swivel arm. The planetary gear spring element is preferably arranged between the planetary gear swivel arms in such a way that the two planetary gear arms are elastically coupled to one another by means of this, preferably this planetary gear spring element connects the first planetary gear swivel arm with the second planetary gear swivel arm elastically. Functionally, the spring deflection takes place in particular when the drive planetary gears do not move synchronously around the sun gear and, in particular, when accelerating and braking, they do so and the deflection is therefore prevented here because one of the drive planetary gears each pushes itself into the dynamic wheel load flow and can then absorb radial forces. In particular, a movement of the two planetary gear swivel arms away from each other (in particular movement of the first planetary gear swivel arm clockwise and movement of the second planetary gear swivel arm counterclockwise or vice versa) is counteracted by a spring force applied by the planetary gear spring element. In particular, the planetary gear spring element enables the suspension properties of the epicyclic drive gear to be influenced.

In a preferred embodiment, at least one of the two arm guides or preferably both, in the guide of the guide arm opposite the drive ring gear or on the drive ring gear, has at least two guide contact points, these two guide contact points in the radial direction, i.e. along the circumference, are spaced from one another around the ring gear axis. In particular, these two guide contact points, which are radially spaced from one another, i.e. on a diameter in the circumferential direction, prevent tilting and thus in particular forcing of this guide arm, which is guided in this way with the arm guide, in the drive plane relative to the drive ring gear. The arm guide preferably has two and preferably two or more guide rollers, one guide contact point lying on one of these two guide rollers and the other guide contact point on the other guide roller. Accordingly, the arm guide with the two guide rollers preferably has a two-wheeled slide with which the arm guide is guided on or opposite the drive ring gear. Furthermore, the arm guide preferably has only a single guide roller with which it and thus the guide arm is guided with respect to or on the drive ring gear. In particular, an arm guide with only one guide roller enables a particularly simple construction of the epicyclic gear drive wheel. In particular, an arm guide with at least two guide rollers enables particularly precise guidance of the guide arm with respect to the drive ring gear.

In a preferred embodiment, a so-called spring strut is provided, this spring strut being guided with a spring strut guide opposite or on the drive ring gear. The spring strut guide is preferably designed in the same way as the arm guide and preferably has one or more guide rollers for guiding the spring strut with respect to, or on, the drive ring gear. The spring strut preferably has a spring strut guide with two guide rollers, which are arranged as explained for the arm guide, so that tilting of the spring strut guide in the drive plane with respect to the drive ring gear is prevented. The suspension strut also preferably has a spring element and a damping element. Furthermore, the suspension strut preferably has a suspension strut coupling point, which is further preferably arranged at an end of the suspension strut opposite the suspension strut guide. Further preferably, the suspension strut is pivotably coupled to the epicyclic drive at the suspension strut coupling point. Furthermore, the strut is preferably coupled to the epicyclic drive in such a way that the strut coupling point lies on the sun gear axis. In a further preferred embodiment, the suspension strut is mounted between the drive ring gear and the body or vehicle frame. In particular, a start-up and / or brake buckling compensation remains unaffected by this arrangement, but the drive planetary gears then also require suspension against the structure, otherwise the drive planetary gears are simply going in a circle, as would be the case with a planetary gear known from the prior art and so could not support any drive torque.

The two planetary gear swivel arms, in particular in the embodiment in which the strut coupling point is on the sun gear axis, and the strut have a common pivot point, which is further preferably on the sun gear axis. More preferably, by means of such a configuration, it is possible to elastically couple the drive ring gear with the rest of the drive epicyclic gear, but in particular with the drive sun gear. In particular, by means of such a spring strut, an additional improvement in a movement of the ring gear axis relative to the sun gear axis and thus in particular a movement such as occurs as a spring movement during operation of the epicyclic gear drive wheel can be improved.

Furthermore, a drive frame, in particular a motor vehicle frame or motor vehicle body component, is provided on which the epicyclic gear drive wheel explained above is arranged. A motor vehicle with such a drive frame is also preferably proposed. This drive frame preferably has at least a first and a second frame coupling point. These frame coupling points are set up for the connection, preferably for the elastic connection, of the drive frame with the epicyclic drive wheel. Preferably, the first frame coupling point is elastically connected, preferably with a first frame coupling element, to the first planetary gear pivot arm or to the first guide arm, and more preferably, the first frame coupling element and the first planetary gear pivot arm or the first guide arm have a common pivot point, and more preferably this common pivot point lies on the first planetary gear axis.

The second frame coupling point is preferably connected elastically, preferably with a second frame coupling element, to the second planetary gear pivot arm or to the second guide arm, and more preferably, the second frame coupling element and the second planetary gear pivot arm or the second guide arm have a common pivot point and, more preferably, this common pivot point lies on the second planetary gear axis.

A single-track or multi-track motor vehicle with at least one such epicyclic drive wheel is also proposed. In particular, because at least one output shaft or preferably the drive motor is arranged geometrically inside, at least radially inside, of the output gear, an electrochemical storage device for supplying energy to the drive motor is arranged in the vehicle frame. In particular, by moving the drive motor into the epicyclic gear drive wheel, there is a lot of free space on the motor vehicle for the arrangement of the electrochemical energy store, so that an electric vehicle with a large energy store and long range and preferably a "low" center of gravity can be displayed.

• 1: eine schematisierte erste Ausführungsform der Erfindung in zwei unterschiedlichen Belastungszuständen,
• 2: eine schematisierte zweite Ausführungsform der Erfindung in zwei unterschiedlichen Belastungszuständen,
• 3: eine schematisierte Ausführungsform der Erfindung mit Federbein.

Individual features and embodiments of the invention are explained in more detail below with reference to the figures, with combinations of features other than the combinations shown in the figures also resulting in embodiments of the invention, showing:

• 1 : a schematic first embodiment of the invention in two different load conditions,
• 2 : a schematic second embodiment of the invention in two different load conditions,
• 3 : a schematic embodiment of the invention with a strut.

In the 1a and 1b a first embodiment of the invention is shown in two different loading situations. The epicyclic drive wheel is here 2 arranged on a motorcycle, which by a person 1 is controlled and via a front wheel 3 and the epicyclic drive wheel designed as a rear wheel 2 disposes. In 1a is the epicyclic drive wheel 2 shown in an unloaded state, in particular without the axle load acting on it, so the epicyclic drive wheel is 2 partly below the road surface 5 shown. In this unloaded state, the sun gear axle falls 18th with the ring gear axis 17th together. The drive ring gear 6th stands for torque transmission to the wheel tire 21 with the two drive planetary gears 7th , 8th engaged. The first drive planetary gear 7th is rotatably arranged on the first planetary gear swivel arm 10 and always at the same distance from it to the drive sun gear 6th guided. With the first planetary gear swivel arm 10 is the first guide arm 12th rotatably or articulated, the hinge axis of this connection through the axis of rotation of the first drive planetary gear 7th runs. Next is the first guide arm 12th with the first arm guide 14th with a guide roller on the drive ring gear 22nd guided. This structure is repeated symmetrically for the second drive planetary gear 8th , the second planetary gear swing arm 11 and the second guide arm 13th with the second arm guide 15th with a leadership role.

In the 1b is the same motorcycle as in 1a shown, however, is the epicyclic drive gear 2 shown in a state under axle load or turned differently under static load. Due to the on the epicyclic drive wheel 2 acting axle load, this is more or less spring-loaded compared to the in 1a shown condition. The two planet gear swivel arms 10 , 11 are via the planetary gear coupling element 16 elastically connected. Next is the epicyclic drive wheel 2 via the two frame coupling elements 19th and 20th elastic on the drive frame 4th coupled. The drive frame 4th shows the first and second frame coupling points for this purpose 26th , 27 on. Due to the static load, in particular the weight of the vehicle with the driver, the sun gear axle is shifted 18th opposite the ring gear axis 17th , with the ring gear axis 17th at the same time the motorcycle's fixed axis of rotation of the wheel tire 9 forms when this is on the road surface 5 unrolls.

Such an arrangement in which the drive sun gear 6th opposite the drive ring gear 22nd from its center in the direction of the road surface 5 and is thus shifted downwards, leads to a low center of gravity but a low ground clearance with respect to the concentric to the drive sun gear 6th arranged drive motor (not shown).

In the 2a and 2 B a further embodiment of the invention is shown in two different loading situations. The epicyclic drive wheel is here 2 arranged on a motorcycle, which by a person 1 is controlled and via a front wheel 3 and the epicyclic drive wheel designed as a rear wheel 2 disposes. In 2a is the epicyclic drive wheel 2 shown in an unloaded state, in particular without the axle load acting on it, so the epicyclic drive wheel is 2 partly below the road surface 5 shown. The drive ring gear 6th stands for torque transmission to the wheel tire 21 with the two drive planetary gears 7th , 8th engaged. The first drive planetary gear 7th is rotatably arranged on the first planetary gear swivel arm 10 and always at the same distance from it to the drive sun gear 6th guided. With the first planetary gear swivel arm 10 is the first guide arm 12th rotatably or articulated, the hinge axis of this connection through the axis of rotation of the first drive planetary gear 7th runs. Next is the first guide arm 12th with the first arm guide 14th with a guide roller on the drive ring gear 22nd guided. This structure is repeated symmetrically for the second drive planetary gear 8th , the second planetary gear swing arm 11 and the second guide arm 13th with the second arm guide 15th with a leadership role. The drive sun gear 6th is the epicyclic drive wheel in the unloaded state 2 from the center of the drive ring gear 22nd from the road surface 5 away, so shifted upwards, this leads to an angling of the two guide arms 12th , 13th opposite the two planetary gear swivel arms 10 and 11 .

In the 2 B is the same motorcycle as in 2a shown, however, is the epicyclic drive gear 2 shown in a state under axle load or reversed under static load. Due to the on the epicyclic drive wheel 2 acting axle let this is quasi sprung. The two planet gear swivel arms 10 , 11 are via the planetary gear coupling element 16 elastically connected. Next is the epicyclic drive wheel via the two frame coupling elements 19th and 20th elastic on the drive frame 4th coupled. Due to the static load, the sun gear axis is shifted 18th opposite the ring gear axis 17th , which at the same time is the motorcycle's fixed axis of rotation of the wheel tire 9 forms when this is on the road surface 5 unrolls.

In 3 is, as in the previous figures, a motorcycle with one person 1 shown as a vehicle driver, the following essentially refers to the Differences to the previously explained embodiments of the invention entered.

In this embodiment of the invention, the second guide arm is a guide arm with an arm guide with two guide rollers 15a educated. Such a guide prevents the guide arm guided by it from tilting in the plane of representation which corresponds to the drive plane. Next in this embodiment is the drive sun gear 6th and the two planetary gear guide arms 10 , 11 about the shock absorber 23 on the drive ring gear 22nd supported. The shock absorber 23 has a spring element and a damper element to improve driving comfort, it being possible for both the spring and the damper element to be designed as active or passive components. This guide the strut 23 opposite the drive ring gear 22nd is about the strut guide 24 achieved, which is designed as a guide with two guide rollers.

In other words, the current starting position in the technology field in which the proposed epicyclic drive wheel can advantageously be used, in the case of electric scooters and motorcycles in single or multi-lane design (so-called light vehicles), is that these represent a potentially important type of vehicle, since These can be seen as enablers for electromobility, since their electrochemical energy storage devices, which are significantly smaller than the large high-voltage energy storage device in a car, can be quickly recharged with relatively low charging capacities. Thus, high-performance charging columns are less important for everyday suitability than for motor vehicles with a high weight, such as, in particular, passenger cars - a lower charging power would already be sufficient for everyday suitability.

In principle, there are conceptual limits with these light motor vehicles, since the range in particular is low in comparison with passenger cars. This short reach is based in particular on a relatively lower efficiency of the previously used mechanical power transmission from the drive motor to the wheel tire and in addition, with known concepts, there is usually a space conflict in the chassis between the drive motor and the energy store for its supply.

The proposed drive concept with the epicyclic drive wheel reduces or prevents this conflict of objectives, since the drive motor is shifted into the wheel tire and the space on the chassis of the light motor vehicle is essentially available for the electrical energy store. Furthermore, the proposed drive concept is comparatively low-maintenance.

The proposed drive technology can be used not only for two-wheelers but also for vehicles with more than two wheels and in particular for tracked vehicles; in principle, it is also possible to drive a rail vehicle with such a drive wheel. Independent of vehicles, the drive technology can also be used in mechanical engineering in general, in particular for machine tools, preferably for driving a milling head. In such an embodiment, the milling head would be the equivalent of the wheel tire. The proposed drive technology can also preferably be used in plant construction with rail-guided, non-straight travel paths, e.g. guide rollers for conveyor belts and ski lifts, escalators, garage door drives, tools on agricultural and construction machinery and the like. The drive technology is particularly preferred for a two-wheeler, since there, and generally in the vehicle sector, the additional functionality of "starting / braking prevention" - drive planetary gears shift into the "inclined" power flow and thus also transfer radial forces - comes into play .

List of reference symbols

1

person

2

Epicyclic drive wheel

3rd

Front wheel

4th

Drive frame

5

Road surface

6th

Drive sun gear

7th

First drive planetary gear

8th

Second drive planetary gear

9

first planetary gear axis, coincides with the first pivot arm support point

10

First planetary gear swivel arm

11

Second planetary swing arm

12th

first guide arm

13th

second guide arm

14th

first arm guide

15th

second arm guide

15a

Second guide arm with arm guide with two guide rollers

16

Planetary gear spring element

17th

Ring gear axle

18th

Sun gear axle

19th

First frame coupling element

20th

Second frame coupling element

21

Wheel tires

22nd

Drive ring gear

23

Shock absorber

24

Suspension strut guide

25th

second planetary gear axis, coincides with the second pivot arm support point

26th

first frame coupling point

27

second frame coupling point

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• DE 102009036890 A1 [0001]

Claims (7)

Epicyclic gear drive wheel (2) with a drive shaft which can be driven by a drive motor to provide drive power, a drive sun gear (6) of an epicyclic drive gear, which is part of the epicyclic gear drive wheel (2), being drivable with the drive power provided and wherein the drive epicyclic gear has a drive ring gear (22) and a first and a second drive planetary gear (7, 8), the drive sun gear (6), for transmitting the drive forces, about a sun gear axis ( 18) is rotatably mounted, and the drive forces from this drive sun gear (6) can be transferred to these drive planetary gears (7, 8) and the drive forces being transmitted via these drive planetary gears (7, 8) to the drive ring gear ( 22) are transferable and wherein the drive ring gear (22) for transmitting the driving forces to a drivable output gear around a ring gear axis (17) which is aligned orthogonally to a drive plane et is, is rotatable, wherein the output gear and the drive ring gear (22) are arranged concentrically to one another and connected to one another in a torsionally rigid manner, characterized in that the first drive planetary gear (7) about a first planetary gear axis (9) on a first Planetary gear swivel arm (10) is rotatably mounted and that the first planetary gear swivel arm (10) is pivotably connected to a first swivel arm mounting point with a first guide arm (12) and that the first guide arm (12) has a first arm opposite the first drive ring gear (22) -Guide (14) is guided and that the second drive planetary gear (8) is rotatably mounted about a second planetary gear axis (25) on a second planetary gear pivot arm (11) and that the second planetary gear pivot arm (11) at a second pivot arm mounting point with a second guide arm (13) is pivotally connected and that the second guide arm (13) is guided on the drive ring gear (22) with a second arm guide (15). Epicyclic drive wheel after Claim 1 , characterized in that the first planetary gear axis (9) and the first pivot arm support point coincide and that the second planetary gear axis (25) and the second pivot arm support point coincide. Epicyclic gear drive wheel according to one of the preceding claims, characterized in that the sun gear axis (18) is arranged eccentrically to the ring gear axis (17) in a rest mode of the epicyclic gear drive wheel. Epicyclic drive wheel according to one of the preceding claims, characterized in that a planetary gear spring element (16) is provided that this planetary gear spring element (16) elastically connects the first planetary gear pivot arm (10) to the second planetary gear pivot arm (11). Epicyclic drive wheel according to one of the preceding claims, characterized in that at least one of the two arm guides (14, 15) in the guide of the respective guide arm (12, 13) opposite the drive ring gear (22) has at least two guide contact points, so that a tilting of this guide arm (12, 13) in the drive plane with respect to the drive ring gear (22) is prevented. Epicyclic drive wheel according to one of the preceding claims, characterized in that a suspension strut (23) is provided, that the suspension strut (23) is guided with a suspension strut guide (24) opposite the drive ring gear (22) and that the suspension strut Guide (24) has at least two spaced-apart guide contact points with the drive ring gear, so that tilting of the strut guide (24) relative to the drive ring gear (22) in the drive plane is prevented and that the spring strut (23) is a spring strut -Coupling point is rotatably coupled to the epicyclic drive and that the strut coupling point is on the sun gear axis (18) so that the drive ring gear (22) and the drive sun gear (6) are resilient to one another by means of the suspension strut (23) are coupled. Drive frame with epicyclic drive wheel according to one of the preceding claims, characterized in that a drive frame (4) has a first and a second frame coupling point (26, 27), that the first frame coupling point (26) is elastically coupled to the first planetary gear axle (9) and that the second frame coupling point (27) is elastically coupled to the second planetary gear axle (27).

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