Drive arrangement for a traction device and traction device for a mobile seating unit

Abstract

Drive arrangement (12) for a traction device (10) for a mobile seating unit, comprising a handlebar support (14) with a steering arm (16) and a fork part (18), wherein a handlebar (20) is arranged on the steering arm (16) and a drive wheel (22) is arranged on the fork part (18), and wherein the steering arm (16) is mounted on the fork part (18) so as to be pivotable about a pivot axis (S), characterized in that the handlebar support (14), in particular the steering arm (16), is designed and / or arranged so as to be asymmetrical to the center plane (M) of the drive wheel (22) such that the steering arm (16) can be pivoted completely or at least partially on a pivot side (X) of the drive wheel (22) up to next to the drive wheel (22).

Description

[0001] The invention is based on a drive arrangement for a traction device for a mobile seating unit, for example a wheelchair, comprising a handlebar support with a steering arm and a fork part, wherein a handlebar is arranged on the steering arm and a drive wheel is arranged on the fork part and wherein the steering arm is mounted on the fork part so as to be pivotable about a pivot axis.

[0002] One way to drive such a mobile seating unit, particularly a wheelchair or stairlift, is to use a traction device. The traction device can typically be connected to the mobile seating unit to be driven. To drive the mobile seating unit, the traction device has a manual and / or motorized drive. Chain drives in conjunction with hand cranks are particularly used. The chain drive drives the drive wheel of the traction device, allowing the mobile seating unit connected to the traction device to be moved.

[0003] DE 90 11 220 U1 discloses a wheelchair with two large rear wheels with hand rims and two small front wheels, as well as a fifth wheel which is used for locomotion and can be driven and steered via a hand crank in the driver's chest area.

[0004] DE 32 00 157 A1 describes a traction device with its own drive and a detachable connection containing a rigid tube or rod which can be pivoted about a vertical axis and is intended for coupling close to a front wheel of the wheelchair to be driven, as well as a steering rod which is connected to the traction device and which is rigid during operation.

[0005] A drive assembly for a traction device for a wheelchair is known from published patent application DE 10 2016 118 144 A1. The drive assembly described therein comprises a handlebar support with a steering arm and a fork section with a drive wheel. The handlebar is designed as a hand crank. The drive wheel can be driven via a drive chain in conjunction with a torque transmission unit and an output chain. Electric motor assistance is also possible.

[0006] While such a traction device can enable low-effort mobility for the user with a mobile seat unit, transporting the traction device in conjunction with the mobile seat unit has so far proven difficult. For example, when transporting the device in a car, the traction device must be loaded into the car in addition to the mobile seat unit, resulting in increased storage space requirements in the car.

[0007] Due to the wide range of impairments and severity of the users' impairments, different application situations and other circumstances, traction devices should generally be designed to be flexible and cost-effectively adaptable.

[0008] The object of the present invention is therefore to offer an improved drive arrangement for a traction device as well as an easily transportable, yet flexibly adaptable traction device for a mobile seating unit.

[0009] The object is achieved by a drive arrangement for a traction device for a mobile seating unit, comprising a handlebar support with a steering arm and a fork part, wherein a handlebar is arranged on the steering arm and a drive wheel is arranged on the fork part and wherein the steering arm is mounted on the fork part so as to be pivotable about a pivot axis, wherein the handlebar support, in particular the steering arm, is designed and / or arranged so asymmetrically to the center plane of the drive wheel that the steering arm can be pivoted completely or at least partially on a pivot side of the drive wheel up to next to the drive wheel.

[0010] A fundamental idea of the invention is therefore to design the drive assembly in such a way that the steering arm can be pivoted as far as possible, in particular right up to the side of the drive wheel. This allows a traction device equipped with such a drive assembly to be folded or packed to a particularly compact size, for example, for transport.

[0011] It is advantageous if the steering arm can be pivoted completely on the pivot side of the drive wheel, right next to the drive wheel. Depending on the design, however, it is also conceivable for the steering arm to be pivoted only partially, for example, at least a quarter of the way, preferably at least halfway, right next to the drive wheel.

[0012] The steering support can be designed asymmetrically in such a way that the steering arm can be pivoted through a particularly large angle without parts of the steering arm hitting other parts of the towing device, in particular the drive wheel, when pivoting.

[0013] The steering arm can be pivoted forward, i.e., in the direction of normal travel, and / or backward, i.e., opposite to normal travel. In other words, the pivot axis can run perpendicular to the center plane of the drive wheel.

[0014] The pivoting side represents the side of the drive wheel—i.e., the left or right side of the drive wheel depending on the normal direction of travel—along which the steering arm can pivot completely or at least partially next to the drive wheel. "Next to the drive wheel" refers to the area of the respective half-space defined by the center plane of the drive wheel and belonging to the pivoting side, which, when the drive wheel is in the upright position typical for the tractor's operation, extends from the ground to the top edge of the drive wheel.

[0015] Since the handlebar support, in particular the steering arm, is designed and / or arranged asymmetrically to the center plane of the drive wheel, the pivoting side can be defined by the position of the volume center of gravity of the handlebar support or the steering arm relative to the center plane of the drive wheel. In particular, the pivoting side can be defined by the volume center of gravity being located in the left or right half-space defined by the center plane.

[0016] The steering arm can have at least two steering arm rods. By using multiple steering arm rods, the rigidity of the steering arm and thus its stability can be improved while maintaining low weight. Preferably, the at least two steering arm rods are arranged and / or can be arranged in the half-space associated with the pivoting side. In particular, the steering arm rods can be arranged and / or can be arranged in the same half-space defined by the center plane of the drive wheel. The handlebar can then be arranged and / or guided on two steering arm rods, in particular by means of a handlebar mount located between the two steering arm rods.

[0017] To further improve stability, the steering arm can be supported and / or mounted on the fork section via an additional support on the side of the handlebar support opposite the pivoting side. The additional support can be narrower than the steering arm. The attachment point of the additional support on the steering arm can be selected to maintain the largest possible maximum pivoting angle. In particular, the additional support can be attached to only one of the steering arm rods.

[0018] The drive arrangement can have a manual drive. For this purpose, a crank drive, in particular a hand crank, can be arranged and / or formed on the handlebar, wherein the crank drive can be connected to the drive wheel in a torque-transmitting manner via a drive means, in particular a drive chain, a torque transmission unit and an output means, in particular an output chain. The drive means and / or the output means can each preferably be designed as a chain. Alternatively or additionally, however, it is also conceivable to design the drive means and / or the output means as a belt, cable and / or as a spindle. The drive wheel can thus be driven by actuating the crank drive, wherein a torque generated at the crank drive can be transmitted to the drive wheel via the drive means, the torque transmission unit and the output means.A gear ratio or the like can be provided along this path to appropriately convert the torque generated at the crank. In particular, the torque transmission unit can be designed as a gearbox.

[0019] The towing device can be folded particularly safely if the drive mechanism is guided in the steering arm and / or the output mechanism is guided in the fork section. This allows the drive mechanism to be safely "stowed away," for example, when the steering arm is pivoted. If the drive mechanism is designed as a drive chain, this can prevent the drive chain from falling off a crank drive gear on the handlebar when the steering arm is pivoted. User injuries caused by contact with the drive mechanism or the output mechanism while riding the towing device can also be avoided.

[0020] Further space savings can be achieved if the drive means and the output means are arranged in the same half-space defined by the center plane of the drive wheel, particularly in the half-space associated with the pivoting side. The drive means and the output means can thus be arranged relatively close to one another. Furthermore, this allows additional space to be created within the drive arrangement for arranging further elements of the drive arrangement, for example, for arranging the torque transmission unit.

[0021] The torque transmission unit can have at least one shaft arranged coaxially with the pivot axis. Particularly preferably, the torque transmission unit can have at least two shafts arranged coaxially with one another, in particular a drive shaft assigned to the drive means and an output shaft assigned to the output means. In particular, the two shafts can each be arranged coaxially with the pivot axis. This prevents a change in the length of the drive means and / or the output means during pivoting of the steering arm. For example, in the case of a drive chain and an output chain, no additional chain tensioner or the like is necessary to compensate for a change in length due to pivoting of the steering arm.

[0022] In a particularly preferred class of embodiments of the invention, it is provided that the drive arrangement comprises at least one, in particular electric, motor, wherein the at least one motor can particularly preferably be designed as a hub motor and / or as a mid-engine. The motor can be designed to assist a manual drive. Alternatively or additionally, for example selectable by a user of the traction device, the motor can also be designed to independently drive the traction device or a mobile seating unit connected to the traction device. For this purpose, a power selection lever, for example electrically connected to the motor, can be provided on the handlebars for controlling the motor. Alternatively or additionally, the power output by the motor can be controllable as a function of a manual power applied by the user and / or a torque applied by the user.In particular, the motor can be controllable and / or controlled in the manner of a pedelec.

[0023] A hub motor can be located, in particular, at the hub of the drive wheel. Such a hub motor typically offers the advantage of particularly quiet operation.

[0024] A mid-drive motor can, particularly with the aid of a suitable transmission, operate at speeds that are (largely) independent of the drive wheel's speed. This allows for particularly efficient operation of the mid-drive motor. Furthermore, heat problems, such as those encountered during uphill riding, can be avoided or reduced more easily than with a hub motor.

[0025] The drive system can be manufactured particularly flexibly and cost-effectively if a commercially available motor is used as the motor. In particular, it is conceivable to use a commercially available motor for pedelecs. Such pedelec motors are typically tuned to torques or forces similar to those encountered when a pedelec or similar bike is leg-powered.

[0026] Particularly with manually driven or merely motor-assisted traction devices, it is common practice to provide a gear ratio between the crank drive and the drive shaft and / or a motor shaft of the motor, whereby the drive shaft or motor shaft rotates faster than the (hand-operated) crank drive. Furthermore, the torques that can be generated manually are generally lower than those that can be generated by leg propulsion. Therefore, when using a (commercially available) pedelec motor, its torque-dependent power control may not be, or only insufficiently, matched to the torques that occur or are to be expected on the drive shaft or motor shaft of a traction device with such a gear ratio.

[0027] Therefore, it is advantageous if the gear ratio between the crank drive and the drive shaft and / or a motor shaft is set such that the speed of the drive shaft and / or the motor shaft is at most as high as the speed of the crank drive. Preferably, the motor can be designed as a mid-mounted motor, because in this case, a pedelec motor that would otherwise be designed or usable as a bottom bracket motor can also be used for the drive arrangement.

[0028] The motor, designed as a mid-engine, can be positioned largely freely on the drive arrangement, in particular on the handlebar support. The motor can preferably be arranged adjacent to the torque transmission unit. For this purpose, a drive axis of the motor can be offset parallel to the pivot axis, in particular offset upwards depending on the position of use of the towing device. Depending on the torque transmission unit used, this can also be used by the motor. To adapt the torques and / or speeds to be generated by the motor, additional design options arise in the case of a mid-engine. In particular, the motor can act optionally on the drive means, the torque transmission unit, or the output means. Furthermore, the arrangement of the motor adjacent to the torque transmission unit facilitates the pivoting of the steering arm.

[0029] A tank or battery or the like required for the operation of the motor can be arranged in and / or on the handlebar support, in particular in and / or on the fork part, so that this also enables the steering arm to be pivoted as far as possible and thus a further reduced packing size.

[0030] It can be provided that an installation space is configured adjacent to the pivot axis and / or around the pivot axis to accommodate the torque transmission unit and / or the at least one motor. The installation space can, in particular, be configured for modular, optional fitting with a torque transmission unit and / or with at least one motor. Thus, a modular, modular system of traction devices or drive arrangements for traction devices can be designed.

[0031] The installation space can be adapted, and in particular dimensioned, to accommodate different types of torque transmission units and / or different types of motors. This allows a suitable torque transmission unit or motor to be used depending on the specific requirements. This allows smaller motors to be used, especially in cases where low power requirements are required, thus also reducing the packaging dimensions.

[0032] Furthermore, the achievable packing dimensions for transport purposes can be improved if the handlebar is designed and / or arranged so that it can be moved and / or pivoted relative to the handlebar arm. This also increases user comfort. The handlebar, or the crank drive arranged and / or formed on the handlebar, can also be used as a replacement for an otherwise required chain tensioner by being moved and / or pivoted, particularly in the case of a drive mechanism designed as a drive chain.

[0033] If at least one parking support, particularly one that can be folded up and down laterally, is arranged and / or formed on the handlebar support, particularly on the fork section, the towing device can be parked independently of the mobile seat unit. For transport, the parking support can be folded down to the side, thus further ensuring a small pack size.

[0034] It is further conceivable for the drive arrangement, in particular the handlebar support, to have at least one locking device. The locking device can be designed to releasably secure the steering arm in at least one pivoting position. Preferably, a locking position can be provided for a final pivoting position for use during driving, i.e. with the steering arm unfolded. Alternatively or additionally, a further locking position can be provided for a final pivoting position for transport, in particular with the towing device folded up to its maximum. Furthermore, a locking position for a middle pivoting position for convenient connection of the towing device to the mobile seat unit is conceivable.

[0035] The scope of the invention also includes a traction device for a mobile seat unit, which comprises a drive arrangement according to the invention.

[0036] The mobile seating unit can be a wheelchair, a recumbent bicycle, or the like. In general, the mobile seating unit can also include vehicles for transporting people, which are usually at least manually propelled, such as strollers or the like.

[0037] Further features and advantages of the invention will become apparent from the following detailed description of the embodiments of the invention, with reference to the figures of the drawing, which show details essential to the invention, and from the claims.

[0038] The features illustrated in the drawings are presented in such a way that the special features of the invention can be clearly seen. The various features can be implemented individually or in combinations in variants of the invention.

[0039] They show: Fig. 1 a pulling device in unfolded state in perspective view from the front; Fig. 2 the pulling device in unfolded state in a side view; Fig. 3 the pulling device in unfolded state in a front view; Fig. 4 the pulling device in folded state in perspective view from the front; Fig. 5 the pulling device in folded state in a side view; Fig. 6 the pulling device in folded state in a front view; Fig. 7 a detailed view of section VII from Fig. 1 in perspective view; Fig. 8 a cross-sectional view of the section according to Fig. 7 and Fig. 9 one of the Fig. 7 corresponding detailed view of an alternatively designed pulling device.

[0040] To simplify understanding, the same reference symbols are used below for functionally corresponding elements wherever possible. For illustrative purposes, certain elements have been at least partially hidden in some figures of the drawing, so that not all elements actually visible in a figure can be depicted in the respective figures.

[0041] Fig. 1, Fig. 2 and Fig. 3 show a traction device 10 for a mobile seating unit (not shown) in the unfolded state in a perspective view from the front, in a side view and in a view from the front, respectively.

[0042] As is particularly evident from Fig. 1, the traction device 10 has a drive assembly 12. The drive assembly 12 comprises a steering support 14 with a steering arm 16 and a fork part 18. A handlebar 20 is arranged on the steering arm 16.

[0043] A drive wheel 22 is arranged on the fork part 18, in particular rotatably mounted.

[0044] The steering arm 16 is mounted on the fork part 18 so as to pivot about a pivot axis S. It has two steering arm rods 24. The steering arm rods 24 run parallel to each other.

[0045] A crank drive, in particular a hand crank, is formed on the handlebar 20. For this purpose, the crank drive has two crank rods 26 with handles (in Fig. 1 not shown) and a crank drive gear 28.

[0046] Fig. Figure 2 shows that a drive chain 30 is guided around the crank drive gear 28. The drive chain 30 is guided through the two steering arm rods 24 to a drive blade 32. The drive blade 32 is also designed as a gear. It is arranged coaxially to the pivot axis S.

[0047] An output blade 34 is arranged coaxially to the drive blade 32 and coaxially to the pivot axis S. The output blade 34 is in turn connected via an output chain 36 to a gear ring 38 connected to the drive wheel 22. It is conceivable to use a simple gear wheel instead of the gear ring 38.

[0048] A motor 40 is also arranged in the area of the drive blade 32 and the driven blade 34.

[0049] As from Fig. 3, a center plane M is defined by the drive wheel 22. The two steering arm rods 24 are located as shown in the Fig. 3 in the left half-space H formed by the central plane M. Accordingly, according to the representation of the Fig. 3 the left side of the drive wheel 22, i.e. the right side of the drive wheel 22 as seen in the usual direction of travel, represents a pivoting side X.

[0050] Out of Fig. 3 further shows that the drive assembly 12 has two parking supports 42, each of which can be positioned laterally from the drive wheel 22 or from the drive assembly 12 and can be positioned against it. For the detachable fixing of the parking supports 42, locking levers 44 are also provided on the fork part 18, of which, for illustration purposes, Fig. 3 only a locking lever 44 is shown.

[0051] Fig. 4, Fig. 5 and Fig. 6 show the traction device 10 with its drive arrangement 12 in the folded state.

[0052] In turn, Fig. 4 a perspective view from the front, Fig. 5 a side view and Fig. 6 a front view of the traction device 10 or its drive arrangement 12.

[0053] To improve the stability of the steering arm 16, as can be seen Fig. 4 - an additional support 46 is provided, via which the steering arm 16 on the swivel side X ( Fig. 3) opposite side on the fork part 18, in particular also pivotable about the pivot axis S.

[0054] It can be seen in particular that the additional support 46 is narrower than the steering arm 16. In particular, the additional support 46 has a width corresponding only to one of the two steering arm rods 24. This makes it possible for the additional support 46 to engage only the upper of the two steering arm rods 24.

[0055] Fig. 5 shows that the steering arm 16 in the illustrated folded state of the drive arrangement 12 is at least partially on the pivot side X ( Fig. 3) - in the representation according to Fig. 5, i.e. on the side of the drive wheel 22 lying in front of the drive wheel 22 - until it is pivoted next to the drive wheel 22. In particular, the Fig. 5 lower steering arm rod 24 next to the drive wheel 22.

[0056] This is possible because the steering arm 16 with its two steering arm rods 24 is suitably asymmetrical to the center plane M ( Fig. 3) of the drive wheel 22. In particular, both steering arm rods 24 are located in the same half-space H ( Fig. 3), ie the swivel side X ( Fig. 3) associated half-space. In addition, the drive chain 30 ( Fig. 2) and the output chain 36 ( Fig. 2) in half-space H.

[0057] Parts running obliquely to the center plane M, which would hinder and / or restrict pivoting of the steering arm 16, are thus at least largely, in particular with the exception of the additional support 46 ( Fig. 4), have been eliminated.

[0058] It can thus be seen that the pulling device 10 can be folded down to a small packing size.

[0059] The packing dimensions can be further reduced by folding the parking supports 42 to the side of the drive wheel 22.

[0060] Furthermore, Fig. 5, that the handlebar 20 with its crank drive gear 28 and the hand crank 26 is arranged via a handlebar mount 48 on the two steering arm rods 24, in particular displaceable along the steering arm rods 24. By means of a clamping mechanism (in Fig. 5 not shown), the handlebar mount 48 can be releasably attached to the two handlebar rods 24.

[0061] Furthermore, the handlebar 20 is pivotable and, in particular, detachably fixed to the handlebar holder 48.

[0062] These additional adjustment options allow the drive arrangement 12 or the traction device 10, particularly in the unfolded state, to be further adapted to the needs of a user of the mobile seating unit.

[0063] In Fig. 5 - and also in Fig. 6 - shown, folded state, the packing size can be further reduced by these adjustment options, for example by moving the handlebar mount 48 as far forward as possible, i.e. according to the illustration of the Fig. 5 to the right. Additionally, the handlebar 20 can be pivoted downwards, for example, until it snuggles against the front wheel 22.

[0064] Fig. 7 shows a detailed view of section VII from Fig. 1.

[0065] The drive blade 32 and the output blade 34 can be seen, both of which are arranged coaxially to each other and coaxially to the pivot axis S.

[0066] Also visible is the motor 40, which is designed as an electric mid-engine. The motor 40 is located in a correspondingly dimensioned installation space 50.

[0067] Fig. 8 shows a cross-sectional view of the section according to Fig. 7, after which the drive blade 32 is seated on a drive shaft 52 in a rotationally fixed manner.

[0068] The output blade 34, in turn, is non-rotatably mounted on an output shaft 54.

[0069] The drive shaft 52 and the output shaft 54 are arranged coaxially to each other and coaxially to the pivot axis S.

[0070] Torque can be transmitted from the drive blade 32 to the output blade 34 via the two shafts 52, 54. Thus, the drive shaft 52 and the output shaft 54 act together as a torque transmission unit. It is conceivable that the two shafts 52, 54 are connected to each other via a gear, allowing them to be operated at different speeds.

[0071] Furthermore, the output blade 34 can be subjected to an additional torque generated by the motor 40 via the output shaft 54.

[0072] Finally, in Fig. 9 shows a further embodiment of a traction device for a mobile seating unit in a schematic representation.

[0073] In particular, Fig. 9 one of the Fig. 7 corresponding detailed view of this alternative embodiment, wherein for illustrative reasons the output blade 34 is shown as a disk.

[0074] This embodiment largely corresponds to the previously described embodiment of the pulling device 10.

[0075] It differs essentially in that the installation space 50 now contains instead of the motor 40 ( Fig. 7) an additional gear 56 is installed. The additional gear 56 forms the torque transmission unit of this embodiment. This provides an additional adjustment option for adapting the gear ratios between the crank drive, the drive blade 32, the driven blade 34 and / or the drive wheel 22 ( Fig.1) and thus to adjust the resulting speed of the drive wheel 22 or its torque that can be used for travel.

[0076] This embodiment can be used in particular in conjunction with a hub motor arranged on the drive wheel 22. List of reference symbols 10 traction device 12 Drive arrangement 14 handlebar support 16 Steering arm 18 Fork part 20 handlebars 22 Drive wheel 24 Steering arm rod 26 Crank rod 28 Crank drive gear 30 drive chain 32 drive blade 34 Output blade 36 Output chain 38 sprocket 40 engine 42 Parking support 44 locking lever 46 Additional support 48 handlebar mount 50 installation space 52 drive shaft 54 Output shaft 56 additional gears H half-space M center plane S swivel axis Section VII X Swivel side

Claims

[1] Drive arrangement (12) for a traction device (10) for a mobile seating unit, comprising a handlebar support (14) with a steering arm (16) and a fork part (18), wherein a handlebar (20) is arranged on the steering arm (16) and a drive wheel (22) is arranged on the fork part (18), and wherein the steering arm (16) is mounted on the fork part (18) so as to be pivotable about a pivot axis (S), characterized by that the handlebar support (14), in particular the steering arm (16), is designed and / or arranged asymmetrically to the center plane (M) of the drive wheel (22) in such a way that the steering arm (16) can be pivoted completely or at least partially on a pivoting side (X) of the drive wheel (22) up to next to the drive wheel (22). [2] Drive arrangement according to claim 1, characterized by that the steering arm (16) is arranged and / or mounted on the fork part (18) via an additional support (46) on the side of the handlebar support (14) opposite the pivoting side (X). [3] Drive arrangement according to one of the preceding claims, characterized by that a crank drive, in particular a hand crank, is arranged and / or formed on the handlebar (20), wherein the crank drive is connected to the drive wheel (22) in a torque-transmitting manner via a drive means, in particular a drive chain (30), a torque transmission unit and an output means, in particular an output chain (36). [4] Drive arrangement according to one of the preceding claims, characterized by that the drive means are guided in the steering arm (16) and / or the output means are guided in the fork part (18). [5] Drive arrangement according to one of the preceding claims, characterized by that the drive means and the output means are arranged in the same half-space (H) defined by the central plane (M) of the drive wheel (22), in particular in the half-space (H) belonging to the pivoting side (X). [6] Drive arrangement according to one of the preceding claims, characterized by that the torque transmission unit has at least one shaft which is arranged coaxially to the pivot axis (S). [7] Drive arrangement according to one of the preceding claims, characterized by that the torque transmission unit has at least two shafts arranged coaxially to one another, in particular a drive shaft (52) assigned to the drive means and an output shaft (54) assigned to the output means. [8] Drive arrangement according to one of the preceding claims, characterized by that the drive arrangement (12) comprises at least one, in particular electric, motor (40), wherein the at least one motor (40) is particularly preferably designed as a hub motor and / or as a mid-motor. [9] Drive arrangement according to one of the preceding claims, characterized bythat the transmission ratio between the crank drive and the drive shaft (52) and / or a motor shaft of the motor (40) is set such that the speed of the drive shaft (52) and / or the motor shaft is at most as high as the speed of the crank drive, wherein the motor (40) is preferably designed as a central motor. [10] Drive arrangement according to one of the preceding claims, characterized by that the motor (40) is arranged adjacent to the torque transmission unit, wherein preferably a drive axis of the motor is arranged offset parallel to the pivot axis (S), in particular offset upwards according to the position of use of the pulling device (10). [11] Drive arrangement according to one of the preceding claims, characterized by that a construction space (50) adjacent to the pivot axis (S) and / or around the pivot axis (S) is designed to accommodate the torque transmission unit and / or the at least one motor (40). [12] Drive arrangement according to one of the preceding claims, characterized by that the handlebar (20) is designed and / or arranged to be displaceable on the steering arm (16) and / or pivotable relative thereto. [13] Drive arrangement according to one of the preceding claims, characterized by that at least one parking support (42), in particular one that can be folded up and down laterally, is arranged and / or formed on the handlebar support (14), in particular on the fork part (18). [14] Traction device (10) for a mobile seating unit, for example a wheelchair, comprising a drive arrangement (12) according to one of the preceding claims.

Images