EP3383340B1 - Mobility support system - Google Patents

Description

Field of the invention

The present invention relates to a mobility support system which has increased tilting stability and the width of which can be changed, as well as a method for changing the width of the mobility support system.

Background of the invention

Mobility restrictions due to physical impairments are caused by accidents, illnesses and the aging process. Particularly in the context of an aging society, the number of people affected increases and creates an ever greater social and economic problem. Age or illness often result in a loss of physical strength, which is usually associated with a reduction in physical activity. As a result, the affected people not only lose more strength, but also their ability to coordinate, which often ends in the need for care.

Maintaining mobility is therefore an important goal of preventive health care in old age. The most successful technical product to date to support mobility for this target group is a rollator. A rollator is a passive device that is set in motion by the user, as in the WO2006 / 074473 is described.

In particular, rollators and other similar devices are used to support walking function and are used for weak (older) people and, for example, as a rehabilitation measure after an operation or as support for age-related impairment of walking function. Rollators should serve as a stable support when walking. Known rollators achieve this stability only when the handles are loaded vertically. If, on the other hand, the rollator is subjected to a transverse load, ie a horizontal force on the handles, the rollator often tilts and thus often leads to serious falls. Known rollators have a dead weight of 5 to 10 kg and have small footprints in order to be able to to be agile and transportable. Thus, a rollator can already tilt over blocked wheels of the rollator from a force of about 12 N, which acts horizontally on the handles. This is the case, for example, when a seated person wants to stand on the rollator. The rollator can also tip over very easily if a person leans on it from the side. In addition, the wheels of the rollator tend to slip away if the rollator is not subjected to a sufficiently high vertical force. In this case, the brakes, which block the wheels and prevent the rollator from moving away, are ineffective because the rollator slips away. This can lead to falls and / or uncoordinated movements of the person using the rollator. The object of the present invention is therefore to at least partially eliminate the disadvantages mentioned and to provide a system which has a high level of stability against tilting, is easy to transport and is easy to maintain and repair.

Detailed description of the invention

The object of the present invention is at least partially achieved by a mobility support system according to claim 1 and by a method for changing a width of a mobility support system according to claim 14.

In particular, the object is achieved by a mobility support system, in the form of a rollator, comprising a drive unit which is set up to drive at least one wheel of the mobility support system; a modular structural frame, the modular structural frame comprising a central module and at least one side module, the drive unit being arranged in the central module and / or the at least one side module, and with at least one wheel being assigned to the side module. The central module and the at least one side module each have at least one interface, by means of which the central module can be coupled mechanically and / or electronically reversibly to the at least one side module.

Mobility support systems of this type are used in particular to support older people with walking or are used for rehabilitation measures after an operation. For this purpose, a user can hold on to the mobility support system and control it accordingly in order to go in a desired direction. The at least one driven wheel of the mobility support system is used in particular the compensation of the own weight of the mobility support system, so that the mobility support system can be pushed very easily by the user. The drive thus compensates for the inertia of the mobility support system when accelerating and / or decelerating, when cornering and, for example, the downhill force when walking downhill. Other applications are also possible.

The drive unit preferably comprises software, electronics and mechanics and makes it possible to convert a control signal into a corresponding propulsion of the wheel. The wheel is preferably driven electrically. The drive unit can be arranged in one of the modules (central module and / or side module) or the components of the drive unit can be distributed over the modules. The energy store, which is typically a rechargeable battery, is preferably arranged in the central module. The electric drives for the wheels are preferably arranged in the side modules. The modular structural frame provides the mechanical stability of the mobility support system and is used to accommodate the components of the mobility support system, such as the drive unit and / or the wheels. The side module, to which at least one wheel is assigned, defines the center distance of the wheels of the mobility assistance system. The mobility support system typically has at least three wheels, the wheels being assigned to a front axle or a rear axle. The center distance is the distance between the front and rear axles.

The interface, by means of which the central module can be mechanically and / or electronically reversibly coupled to the at least one side part, serves to quickly and easily dismantle the mobility support system into the individual modules. The modules (central module and side modules) form self-contained units. For example, a side module comprises a wheel, a drive assigned to the wheel and a line that connects an electronic interface with the drive. For example, data and / or power can be transmitted via the interface and the line. In this case, a computing unit that controls the drive and an energy store can be arranged in the central module. If a defect occurs on one of the modules, the corresponding module can be exchanged and serviced or repaired separately. This ensures high availability of the mobility support system. In addition, the modular structural frame makes it easier to transport the mostly heavy mobility support system. Transport is simplified because the individual modules can be transported separately and on Location of the mobility support system can be coupled again. Thus, for example, the transport and loading of the mobility support system in a car are simplified. Furthermore, the mobility support system can be adapted to the respective user by exchanging individual modules. If, for example, modules of different sizes are available, the size of the structural frame can be adapted to the body size of the person to be supported. It is also possible to adapt the functionality of the mobility support system to the respective person. In particular, by exchanging individual modules, the mobility support system can be upgraded and further functions can be made available to a user if these are required by the user. Likewise, the functionalities of one series can easily be supplemented and / or replaced with the functionalities of another series.

The interfaces of the central module and of the at least one side module preferably comprise a data and / or drive power interface. Data interfaces are used to exchange data to or from the at least one side module. For example, data that are obtained in the at least one side module (for example sensor data) can be transmitted to the central module by means of the data interface. Likewise, data, such as control signals, can be transmitted from the central module to the at least one side module. The drive power interface allows drive power to be transmitted from the central module to the at least one side module. The drive power can be transmitted in the form of mechanical power, electrical power, pneumatic power and / or the like. For example, the drive power interface can comprise a shaft which provides the drive power for a driven wheel of the side module. The drive power interface can also comprise a cable or a plug which provides electrical energy for driving a wheel.

The interfaces of the central module and of the at least one side module are quick-assembly interfaces which are set up to couple the central module to the at least one side module without tools. A tool-free coupling enables the modules to be coupled to the structural frame without the need for additional aids, such as tools. Thus, the coupling can be carried out anywhere. The quick assembly interfaces also allow quick coupling of the modules. For example, coupling can be carried out using Quick release, are carried out by means of suitable bolts or pin connections, snap connections and / or the like.

If the central module is coupled to the at least one side module, at least one part of the central module is preferably mounted so as to be vertically or horizontally movable relative to the side module in order to change a width of the mobility support system, with a horizontal movement of the at least one part of the central module preferably perpendicular to the width is. The relative movement of at least a part of the central module relative to the side module makes it possible to shift a volume within the modular structural frame in such a way that the width of the mobility support system can be changed.

In particular, since the modules (i.e. the at least one side module and the central module) have fixed volumes, it is not possible to fold up the mobility support system, as is known, for example, from conventional rollators. The space that is released by moving and / or rotating the at least one part of the central module can then be taken up by the other parts of the central module and / or the at least one side module in order to reduce the width of the mobility support system.

In particular, the complete central module can also be mounted so that it can be moved vertically or horizontally. If only part of the central module is movably supported, the interfaces between the central module and the at least one side module remain stationary relative to the side module, which simplifies the construction. If the at least one part of the central module is moved vertically upwards or downwards, the length of the mobility support system preferably remains constant. This is particularly advantageous when navigating in tight spaces, such as an apartment. If the at least one part of the central module is moved in the horizontal direction, the height of the mobility support system preferably remains constant, so that, for example, the mobility support system can also be used as a seat.

In particular, the reduction in width of the mobility support system allows narrow places such as narrow doors and / or passageways to be passed. For this purpose, the change in width is preferably carried out temporarily and allows the user in the wide as well as in the narrow state of the mobility support system the intended use of the mobility support system. The mobility support system is preferably stable and in particular does not tend to tip over.

The mobility support system preferably has a width in the widest state between 70 cm and 40 cm, preferably between 65 cm and 50 cm and most preferably between 63 cm and 55 cm, the width by 20% to 70%, preferably by 25% to 60 cm %, and most preferably by 30% to 50%. For example, in the wide state, the normal operating state, the mobility support system has a width of approximately 60 cm. In the state with the reduced width, the mobility support system has a width of 40 cm, for example, which means that narrow spaces in an apartment or the user's surroundings can be passed.

The at least one part of the central module which is mounted movably relative to the side module preferably has a wedge shape or a step shape. Likewise, the central module itself can have a wedge shape or a step shape. A wedge shape enables the width of the mobility support system to be continuously adjusted when this wedge-shaped part, or the central module itself, is moved in a horizontal or vertical direction relative to the at least one side module. If this wedge-shaped part is moved relatively, the at least one side module preferably moves synchronously inwards or outwards in order to change the width of the mobility support system.

If the part of the central module and / or the central module itself has a step shape, a discrete adjustment of the width of the mobility support system is possible. If the step-shaped part is moved horizontally or vertically relative to the at least one side module, the at least one side module can be moved in the direction of the width of the mobility support system during and / or after the horizontal or vertical movement of the step-shaped part in order to reduce the width of the mobility support system or increase. The width of the mobility support system can thus assume at least two different widths. If the step-shaped part is equipped with several steps, the mobility support system can also have different widths. The mobility support system preferably also has an actuator element, the actuator element being set up to support the movement of the at least one part of the central module relative to the side module, the actuator element preferably comprising a spring element. By supporting the movement of the at least one part of the central module relative to the side module, changing the width of the mobility support system is simplified for the user. For example, the actuator element can compensate for the force of gravity of the part of the central module when it is to be moved vertically. It is also possible for the actuator element to compensate for frictional forces. The actuator element is preferably set up in such a way that the movement of the at least one part of the central module relative to the side module is carried out by means of the actuator element. The spring element of the actuator element is preferably a mechanical spring, a magnetic spring and / or the like.

The actuator element preferably comprises an electrical actuator. An electrical actuator enables the movement of the at least one part of the central module relative to the side module to be supported, which can for example be controlled by force and / or position. In addition, an electrical actuator enables the change in the width of the mobility support system to be controlled, which can be carried out via a suitable control element. The change in the width of the mobility support system can thus preferably be carried out by the (possibly weak / elderly) user himself and does not require that the part to be moved relative to the side module is actively moved by a person or the user.

The central module and / or at least a part of the central module, which is mounted movably relative to the at least one side module, can preferably be blocked so that a relative movement is not possible. This blocking ensures that the width of the mobility support system is not accidentally changed. The blocking can, for example, take place mechanically by means of bolts and / or pins or by means of suitable brakes which act on the actuator element.

The mobility support system preferably has at least one front axle and one rear axle, the distance between the front axle and the rear axle being in the range of 40 to 70 cm, preferably between 45 and 65 cm and most preferably between 45 and 55, and the center of gravity of the Mobility support system lies between the front axle and the rear axle, and is preferably at least 20 cm and more preferably at least 25 cm behind the front axle. The distance between the front and rear axles in the specified area allows the provision of a stable mobility support system. In particular, the position of the center of gravity between the front and rear axles enables the user to use the mobility support system to stand up, support and / or the like without the user being exposed to the risk of falling due to the mobility support system tipping over. Furthermore, the center of gravity enables the wheels of the front and rear axles to be loaded vertically in such a way that the risk of the mobility support system slipping away can be excluded or at least reduced even under unfavorable load conditions. In addition, the center of gravity on the wheels, in particular that of the rear axle, ensures sufficient traction, which is necessary when braking or when driving over uneven ground such as steps.

The mobility support system preferably also has at least one additional weight which is reversibly attached in and / or on the structural frame, the additional weight preferably being a fluid, the fluid preferably being provided in at least one tank.

By providing additional weights, the mobility support system can be further adapted to the person to be supported. For example, a light person can be supported with a light mobility support system and a heavy person can be supported with a heavy mobility support system. The additional weights can be provided, for example, in the form of fixed, rigid additional weights.

However, the additional weight is preferably provided in the form of a fluid which is filled into tanks provided for this purpose. These tanks can be provided, for example, in cavities in the structural frame and / or attached to the structural frame itself. In order to prevent negative effects from sloshing of the fluid, the tanks are preferably segmented and / or lined with sponge structures. The provision of the additional weight in the form of a fluid makes it possible to transport the mobility support system without having to carry the additional weight with you. If the fluid is water, for example, the additional weight can be made available at the destination by filling the tanks. In particular, can Provide sensors that monitor the level of the tanks. Feedback to the user is thus possible as to whether the tanks are sufficiently filled and / or whether a sufficiently high level of tipping stability is ensured.

The provision of an additional weight also makes it possible to build the mobility support system itself as lightly as possible in order to ensure high mobility and transportability of the mobility support system. The weight required to provide the mobility support system with a high level of stability against tipping can then be provided by appropriately providing additional weight (s). Furthermore, through the adaptive attachment of additional weights, the mobility support system can be operated in an energy-saving manner if only a small additional weight is necessary. Furthermore, the driving behavior can be improved.

The mobility support system preferably weighs at least 50 kg, preferably at least 60 kg and most preferably at least 75 kg, the central module and the at least one side module each weighing a maximum of 30 kg and preferably a maximum of 25 kg. By providing a high weight, the tipping stability and traction of the mobility support system can be significantly improved. Dividing the weight so that the individual modules, i.e. the at least one side module and the central module, do not exceed a maximum weight of 30 or 25 kg, makes it easier to transport the mobility support system.

The mobility support system preferably has at least two driven wheels which are driven by means of the drive unit, the wheels preferably being differentially driven wheels and preferably being assigned to the rear axle. The drive by means of two driven wheels ensures a safe propulsion of the mobility support system, even if one of the driven wheels does not have sufficient traction. This can be the case, for example, with damp or soft surfaces. A differential drive for the wheels ensures that the mobility support system is highly manoeuvrable. The mobility support system can thus also be used in narrow spaces and in particular in apartments that require very small curve radii in order to be able to reach all areas of the room / apartment.

The mobility support system preferably has at least one additional roller, the additional roller being set up to be placed on the floor and to roll sideways when the width of the mobility assistance system is changed. The additional role makes it possible, after the relative movement of the at least one part of the central module, to move the at least one side part in such a way that the width of the mobility support system is reduced. The lateral movement is a movement in the direction in which the width of the mobility support system changes. The additional roller is preferably an omnidirectional wheel which has circumferentially arranged rollers. Omnidirectional wheels allow the wheel to roll in all spatial directions, making the mobility support system highly manoeuvrable. In particular, the mobility support system can be easily navigated by means of the additional rollers, even if the drive of the at least one wheel fails or is temporarily unavailable.

The mobility assistance system preferably has at least one handle, the handle being arranged on the structural frame and preferably being height-adjustable. In particular, the mobility assistance system has at least two handles. The user can walk between the handles in the event that the mobility assistance system has assumed the wide state. If the width has been reduced, the user can preferably walk behind or next to the mobility support system in order to pass narrow spaces.

The mobility support system is preferably stable even when a horizontal force of 150 N, preferably 180 N and most preferably 200 N acts on the handle. The handle is preferably set between 65 cm and 110 cm, preferably between 70 cm and 105 cm and most preferably between 75 cm and 100 cm high. The above-mentioned tilting stability with horizontal forces of 150 N, preferably of 180 N and most preferably of 200 N is achieved with a height-adjustable handle (s) when the handle is in the highest position. If the handle is set correspondingly lower, a higher stability against tilting is preferably achieved. If the mobility support system is stable against tipping under the aforementioned acting forces, a user can use the mobility support system to stand up and / or to support without being exposed to an increased risk of falling.

The object is also achieved by a method for changing a width of a mobility support system, the method having the following method steps: coupling the central module to two side modules; At least move a part of the central module relative to the side modules, the direction of movement of the at least one part of the central module preferably being vertical or horizontal; Moving the side parts relative to one another in order to change a width of the mobility support system, the movement of the side parts preferably running at least partially simultaneously with the movement of the at least one part of the central module, and preferably then blocking the mobility of the at least one part of the central module relative to the side modules.

The method described makes it possible to change the width of the mobility support system and thus to pass narrow places for a user, for example.

Detailed description of the figures

• Fig. 1 eine schematische Darstellung eines Mobilitätsunterstützungssystems,
• Fig. 2A bis 2F schematische Darstellungen unterschiedlicher Mobilitätsunterstützungssysteme,
• Fig. 3 eine schematische Darstellung eines Mobilitätsunterstützungssystems,
• Fig. 4 eine schematische Darstellung eines Mobilitätsunterstützungssystems,
• Fig. 5 eine schematische Darstellung eines Teils eines Mobilitätsunterstützungssystems zur Veränderung der Breite des Mobilitätsunterstützungssystems,
• Fig. 6A bis 6D schematische Darstellungen eines Mobilitätsunterstützungssystems zur Veränderung der Breite des Mobilitätsunterstützungssystems,
• Fig. 7 eine schematische Darstellung eines Mobilitätsunterstützungssystems mit Zusatzrollen, und
• Fig. 8 eine schematische Darstellung eines Mobilitätsunterstützungssystems mit Zusatzgewichten.

The invention is described in more detail below with reference to the accompanying figures. Show:

• Fig. 1 a schematic representation of a mobility support system,
• Figures 2A through 2F schematic representations of different mobility support systems,
• Fig. 3 a schematic representation of a mobility support system,
• Fig. 4 a schematic representation of a mobility support system,
• Fig. 5 a schematic representation of part of a mobility support system for changing the width of the mobility support system,
• Figures 6A to 6D schematic representations of a mobility support system for changing the breadth of the mobility support system,
• Fig. 7 a schematic representation of a mobility support system with additional roles, and
• Fig. 8 a schematic representation of a mobility support system with additional weights.

In particular shows Fig. 1 a mobility support system 100 which comprises a modular structural frame, the modular structural frame having a central module 110 and two side modules 120, 130. Each of the side modules 120, 130 has two wheels 121, 122, 131, 132. Two handles 125, 135 are attached to the modular structural frame, between which a user can walk. The central module 110 has a drive unit 112 which includes software, electronics and mechanics, for example. Furthermore, the central module 110 has an additional module 114, which can be, for example, a seat, a basket and / or the like. The mobility support system 100 has a center distance from the front axle, which is determined by the wheels 122, 132, to a rear axle, which is determined by the wheels 121, 131. Furthermore, the mobility support system 100 has a width 12. The mobility support system 100 has a modular structure.

In Figures 2A through 2F different module configurations of the mobility support system 100 can be seen. The reference symbols with the same number denote the same parts. In particular, in Fig. 2 Mobility support system shown has a central module 110A-110F, two side modules 120A-120F, 130A-130F, which each have at least one wheel 121A-121F, 131A-131F. Furthermore, the mobility assistance system comprises at least two handles 125A-125F and 135A-135F.

The ones in the Figures 2A through 2D The mobility assistance systems shown also have wheels 122A-122D and 132A-132D. The ones in the Figures 2D and 2F Mobility assistance systems shown have a wheel 112E, 112F. As in Figure 2A the handles 125A, 135A can be seen assigned to the central module 110A. The wheels 121A, 122A, 131A, 132A are assigned to the respective side part. In Figure 2B the handles 125B, 135B are assigned to the side modules 120B, 130B. In Figure 2C the handles 125C and 135C and the wheels 122C, 132C are assigned to the central module 110C. In Figure 2D the handles 125D, 135D are assigned to the side modules 120D, 130D and the wheels 132D, 122D are assigned to the central module iloD. The embodiments of the Figures 2E and 2F each have only one front wheel 112E, 112F. This front wheel 112E, 112F is assigned to the central module 110E, 110F. The handles 135E, 125E off Figure 2E are assigned to the central module 110E. The handles 135F, 125F are the side modules 130F or 120F. The respective side modules 130A-130F and 120A-120F can be connected to the respective central module 110A-110F via interfaces. The interfaces are preferably mechanical and / or electronic interfaces and are used, for example, to transmit data and / or drive power. The modules can preferably be coupled without tools by means of the interfaces.

Figure 3 shows a mobility support system 300, which comprises a central module 310 and two side modules 320, 330. The mobility support system 300 furthermore has two rear wheels 321 and two front wheels 322, 332. In addition, the mobility support system 300 has two handles 325, 335. The mobility support system 300 can be changed in its width 32, 34, the left schematic representation of the mobility support system 300 in a wide state and the right representation of the mobility support system 300 in a state with a reduced width 34 shows. In order to change the width 32, 34 of the mobility support system 300, the wedge-shaped central module 310 is moved vertically upwards relative to the side modules 320, 330 (z-direction). The side modules 320, 330 are moved laterally towards one another along the direction of the width 32, 34 in the x-direction and the width 32 is thus changed to the narrow, reduced width 34. This change in width is reversible. Due to the wedge shape of the central module 310, the change in width can take place continuously.

Figure 4 shows a mobility support system 400, which has a central module 410 and two side modules 420, 430. In addition, the mobility support system 400 comprises two rear wheels 421 and two front wheels 422, 432 and the handles 425, 435. In the wide state, the mobility support system 400 has a width 42. In the reduced width state, the mobility assistance system 400 has a width 44. In order to change the width of the mobility support system 400, the wedge-shaped central module 410 is moved in the horizontal direction, perpendicular to the width relative to the side modules 420, 430. After the relative movement of the central module 410, the side modules 420, 430 can be moved towards one another in the X direction and the width can be reduced. This process is also reversible. The mobility support systems 300, 400 can be used both in the wide state and in the narrow state to support a user. In particular in the wide state, the user can move between the handles 325, 335; 425, 435 go.

Figure 5 schematically shows a mechanism for changing the width of a mobility support system 500 in a plan view from above, the mechanism comprising a wedge-shaped central module 510 and two side modules 520, 530. The central module 510 is mounted so as to be movable relative to the side modules 520, 530. For this purpose, bearings 515, 516 are attached between the central module 510 and the side modules 520, 530. An actuator element 540, which preferably comprises a spring element and / or an electrical actuator, supports the relative movement of the central module 510. If the central module 510 is moved in the y-direction or z-direction, the side modules 520, 530 can be moved in the x-direction to reduce the breadth of the mobility support system. The wedge shape of the central module 510 enables the width 42, 44 to be continuously adjusted.

Figure 6 shows a further mechanism for adjusting the width of a mobility support system, the central module 610 being step-shaped. In the wide state ( Figure 6A ) the central module 610 is completely inserted between the side modules 620, 630. To adjust the width, the central module 610 must first be moved in the Y or Z direction ( Figure 6B ). After completing the movement ( Figure 6C ) the side modules 620, 630 are moved towards one another in the X direction. The central module 610 can then be partially introduced between the side modules 620, 630. As in Figure 6D As can be seen, the mobility support system is then in a state with a reduced width.

Figure 7 shows a mobility support system 700, which has a central module 710 and two side modules 720, 730. The mobility assistance system 700 furthermore has two handles 725, 735 and two rear wheels 721, 731 and two front wheels 722, 732. The central module 710 is wedge-shaped. In order to enable lateral movement of the side modules 720, 730, additional rollers 726, 736 are attached to the side modules, which are preferably oriented perpendicular to the rear wheels 721, 731. In order to be able to move the side modules 720, 730 laterally, the additional rollers 726, 736 are moved downwards so that they come into contact with the floor. The rear wheels 731, 721 are preferably raised in the process. By rolling the additional rollers 726, 736 toward one another, the side modules 720, 730 can be moved toward one another. The additional rollers 726, 736 are preferably omnidirectional rollers, so that the mobility support system 700 can easily be navigated even when the drive is switched off.

Figure 8 shows a mobility support system 800, which can be provided with at least one additional weight 850. The mobility support system 800 comprises a central module 810 and at least two side modules 820, 830. Furthermore, the mobility support system 800 comprises the wheels 821, 822, 831, 832 and the handles 825, 835. The additional weights 851, 852, 853, 854 can be attached to the modular structural frame of the Mobility support system 800 can be attached in order to adapt the weight of the mobility support system 800 to a user. The additional weights 851, 852, 853, 854 are preferably tanks which can be filled with fluid. The tanks preferably have segmentation and / or are filled with a sponge structure, so that sloshing of the fluid can be prevented.

List of reference symbols

100, 200, 300, 400, 500, 700, 800

Mobility support systems

110

Central module

120, 130

Side module

112

Drive unit

114

Additional module

121, 122, 131, 132

bikes

125,135

Handles

11

Center distance

12th

width

110A-110F

Central module

120A-110F, 130A-130 F

Side module

131A-131F, 132A-132F, 121A-121F, 122A-122F

bikes

125A-125F, 135A-135F

Handles

112E, 112F

bikes

310, 420, 510, 710

Wedge-shaped central module

420, 430, 520, 530, 720, 730

Side module

321, 322, 332, 421, 422, 432, 731, 721, 722

bikes

325, 335, 425, 435, 725, 735

Handles

z

Vertical direction

x, y

Horizontal direction

32, 42

width

34, 44

Reduced width

610

Step-shaped central module

620, 630

Side module

810

Central module

820, 830

Side module

825, 835

Handles

821, 822, 831, 832

bikes

850

Additional weights

851, 852, 853, 854

Additional weight

726, 736

Additional roles

Claims (14)

1. Mobility support system (100) in the form of a rollator for walking support, comprising:

   a drive unit (112) which is configured to drive at least one wheel (121, 122, 131, 132) of the mobility support system (100);

   characterized in that, the mobility support system comprises a modular structure frame, wherein the modular structure frame comprises a central module (110), as well as at least one side module (120, 130), wherein the drive unit (112) is arranged in the central module (110) and/or the at least one side module (120, 130), and wherein

   at least one wheel (121, 122; 131, 132) is assigned to the side module (120; 130); and

   the central module (110) and the at least one side module (120, 130) each have at least one interface by means of which the central module (110) can be coupled to the at least one side module (120, 130) mechanically and/or electronically reversibly, wherein the interfaces of the central module (110) and of the at least one side module (120, 130) are quick-assembly interfaces which are configured to couple the central module (110) with the at least one side module (120, 130) without tools.
2. Mobility support system (100) according to claim 1, wherein the interfaces of the central module (110) and the at least one side module (120, 130) comprise a data and/or drive power interface.
3. Mobility support system (100) according to any one of the preceding claims,
   wherein at least a portion of the central module (110), when the central module (110) is coupled with the at least one side module (120,130), is mounted vertically or horizontally movable relative to the side module (120, 130) to vary a width (12) of the mobility support system (100), wherein the horizontal movement of the at least one portion of the central module (110) is preferably perpendicular to the width (12).
4. Mobility support system (100) according to any one of the preceding claims,
   wherein the width (12) of the mobility support system (100) in the widest state, is between 70 cm and 40 cm, preferably between 65 cm and 50 cm and most preferably between 63 cm and 55 cm, and can be reduced by 20% to 70%, preferably by 25% to 60% and most preferably by 30% to 50%.
5. Mobility support system (100) according to any one of claims 3 or 4, wherein at least the part of the central module (110) that is movably mounted relative to the side module (120, 130) has a wedge shape or a step shape.
6. Mobility support system (100) according to any one of claims 3 to 5, further comprising an actuator element (540), wherein the actuator element (540) is configured to support the movement of the at least one part of the central module (110) relative to the side module (120, 130), wherein the actuator element (540) preferably comprises a spring element.
7. Mobility support system (100) of claim 6, wherein the actuator element comprises an electric actuator.
8. Mobility support system (100) according to any one of the preceding claims,
   wherein the mobility support system has at least each of a front axle and a rear axle, wherein

   the distance (11) between the front axle and the rear axle is in the range of 40 cm to 70 cm, preferably between 45 cm and 65 cm and most preferably between 45 cm and 55 cm, and wherein

   the center of gravity of the mobility support system (100) is located between the front axle and the rear axle, and preferably at least 20 cm and even more preferably at least 25 cm behind the front axle.
9. Mobility support system (100) according to any one of the preceding claims, the mobility support system further having at least
   one additional weight (850) which is reversibly disposed in and/or at the structure frame, wherein the additional weight is preferably a fluid, wherein the fluid is preferably provided in at least one tank.
10. Mobility support system (100) according to any one of the preceding claims, wherein the mobility support system weighs at least 50 kg, preferably at least 60 kg and most preferably at least 75 kg, wherein the central module (110) and the at least one side module (120, 130) each weigh at maximum 30 kg and preferably at maximum 25 kg.
11. Mobility support system (100) according to any one of the preceding claims, wherein the mobility support system (100) has at least two driven wheels (131; 121) which are driven by means of the drive unit, wherein the wheels are preferably differentially driven wheels and are preferably assigned to the rear axle.
12. Mobility support system according to any one of the preceding claims, wherein the mobility support system has at least one additional roller (726, 736), wherein the additional roller (726, 736) is configured to be placed on the ground and to roll laterally when the width (12) of the mobility support system (100) is changed.
13. Mobility support system according to any one of the preceding claims, wherein the mobility support system has at least one handle (125, 135), wherein the handle is arranged on the structure frame, and is preferably adjustable in height, wherein the mobility support system is preferably tilt-stable when a horizontal force of 150 N, preferably of 180 N and most preferably of 200 N is applied to the handle.
14. Method of changing a width (12) of a mobility support system according to any one of the preceding claims, wherein the method has the following method steps:

    Coupling the central module (110) with two side modules (120, 130);

    Moving at least one part of the central module relative to the side modules (120, 130), wherein the direction of movement of the at least one part of the central module (110) is preferably vertical (z) or horizontal (y);

    Moving the side parts relative to each other to vary a width (12) of the mobility support system (100), wherein the movement of the side parts (120, 130) is preferably at least partially simultaneous to the movement of the at least one part of the central module (110), and preferably subsequently blocking the movability of the at least one part of the central module (110) relative to the side modules (120, 130).

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