WO2018197080A1

WO2018197080A1 - Electrically driven wheeled device

Info

Publication number: WO2018197080A1
Application number: PCT/EP2018/055033
Authority: WO
Inventors: Haluk Yoeruer; Paul Paukow; Thomas Schroeder; Ester RUPRECHT; Uwe Hammer
Original assignee: Robert Bosch Gmbh
Priority date: 2017-04-27
Filing date: 2018-03-01
Publication date: 2018-11-01
Also published as: DE102017207103A1

Abstract

Disclosed is an electrically driven wheeled device, in particular a smart wheel, comprising at least one main wheel part (12), at least one connection unit (14) for connecting the main wheel part (12) to an external unit (16), and at least one drive unit (18) for driving the main wheel part (12), at least part of the connection unit (14) being disposed outside the main wheel part (12). According to the invention, at least the drive unit (18) is disposed at least in part in the connection unit (14).

Description

description

Electric motor driven wheel device

State of the art

There is already an electric motor driven wheel device with a Radgrundkörper, with a drive unit, which is provided for driving the Radgrundkörpers, and with a connection unit, which is provided for a connection of the Radgrundkörpers with an external unit has been proposed.

Disclosure of the invention

The invention relates to an electric motor driven wheel device, in particular of a smartwheel, with at least one Radgrundkörper, with at least one connection unit to a compound of Rad basic body with an external unit, wherein the connection unit is at least partially disposed outside the Radgrundkörpers, and at least one

Drive unit to a drive of Rad basic body.

It is proposed that the drive unit is arranged at least partially in the connection unit. As a result of this configuration, a particularly space-saving, electromotively driven wheel device with increased stability for a consequently wide range of applications, in particular in a load transport area, can be provided. In addition, advantageously, a thermal energy generated during operation can be dissipated by an improved heat conduction from the electric motor driven wheel device and characterized in particular increases a service life and operating performance and advantageously a maintenance and / or repair costs are reduced.

The term "smartwheel" is intended in particular to mean an electromotively driven wheel device with advantageously electric drive components, preferably designed in the manner of a powerwheel, and preferably with sensor components and with data interface components which contribute to an implementation of at least one system functionality, and in a drive unit connected to the wheel main body Preferably, an axis of rotation of the wheel base body is defined by means of at least one bearing of the wheel base body, in particular a sliding bearing, a ball bearing, a rolling bearing and / or another bearing unit of the wheel base body which appears appropriate to a person skilled in the art In particular, the wheel base body has a cylindrical outer contour, preferably a maximum spatial extent of the wheel base body in the direction of the axis of rotation e considers smaller than a maximum spatial extent of the Radgrundkörpers considered in a direction perpendicular to the axis of rotation. Preferably, the Radgrundkörper on a particular circular outer periphery. Particularly preferably, the outer circumference lies in a plane which is at least in the

Is arranged substantially perpendicular to the axis of rotation. By "at least substantially perpendicular" is meant in particular an alignment of a direction relative to a reference direction, in particular in a reference plane, wherein the direction and the reference direction include an angle, in particular less than 8 °, preferably less than 5 ° and particularly advantageously deviates less than 2 ° from a right angle.

Preferably, the Radgrundkörper at least one spatial symmetry, in particular a spatial symmetry with respect to at least one spatial plane of symmetry, preferably with respect to several pairs of different spatial symmetry planes, more preferably a spatial rotational symmetry with respect to the axis of rotation. Preferably, the at least one spatial plane of symmetry is aligned perpendicular to the axis of rotation. At least one, in particular further, spatial symmetry plane preferably contains the axis of rotation. Advantageously, the Radgrundkörper at least one Receiving area for at least one contact element, which is intended for rolling on a substrate, for example for a tire and / or a tread. In particular, the wheel body can advantageously be connected to a contact element, in particular to a tire and / or a running surface. For example, the Radgrundkörper form a rim. In particular, the Radgrundkörper forms a hub of a wheel with hub drive. Preferably, the entire Radgrundkörper is rotatably mounted about the axis of rotation. Preferably, the drive unit is provided to at least partially, in particular completely, drive the wheel base body to a rotating movement about the axis of rotation.

Particularly advantageously, the drive unit comprises at least one electric motor, in particular a brushless electric motor. In particular, the drive unit has at least one rotor. Preferably, the rotor is connected to at least one drive shaft. In particular, the drive unit has at least one stator. Preferably, a direction of rotation and / or a rotational speed of the drive unit, in particular of the rotor, can be switched over, particularly preferably controlled and / or regulated. It is conceivable that the rotor is at least partially connected in one piece with the Radgrundkörper, in particular free of a arranged between the rotor and the Radgrundkörper drive shaft.

A "connection unit" is to be understood in this context in particular a structural unit of the wheel device, which is in particular provided, the Radgrundkörper and advantageously the drive unit to an external unit, in particular a moving by a driving and / or rolling motion driving unit, which in particular can be designed as a transport drive unit, for example as a shopping cart, as a stroller, as a lift truck, as a wheelbarrow, as a roller board and / or as a recreational drive unit, for example as a scooter or as a roller skate, and / or as another driving unit that appears to the person skilled in the art as meaningful; In particular, the connection unit is advantageously positively and / or positively connectable to the external unit and can be stored in a translationally fixed relative to the external unit, particularly in at least one driving operating state Advantageously, the connection unit is made of a solid material, in particular of ei a plastic, in particular a hard plastic, and / or of carbon, but preferred made of metal, in particular of steel, and particularly preferably made of aluminum. It is also conceivable that the connection unit of at least two connection elements, which are positively, positively and / or materially connected to each other, is made. In particular, the connection unit to a, in particular about the axis of rotation, rotatable mounting, in particular around the center of gravity, provided the Radgrundkörpers, the connection unit is arranged in particular at least partially outside the Radgrundkörpers. Including that the connection unit "is at least partially disposed outside the Radgrundkörpers", it should be understood here that the connection unit is at least partially and / or partially outside a smallest imaginary cuboid is arranged, which just completely surrounds the Radgrundkörper. In particular, the connection unit is preferably arranged completely outside the wheel base and at least partially encloses the wheel base. By the fact that the connection unit "at least partially encloses the wheel body" is to be understood here in particular that the connection unit the Radgrundkörper at least partially and / or partially considered, in particular in the direction along the axis of rotation and / or the symmetry axis, two mutually remote sides of the Radgrundkörpers In particular, the connecting unit, in particular in the direction along the axis of rotation and / or the axis of symmetry, is operatively connected to two sides of the wheel base body facing away from the wheel base body Radgrundkörpers considered an at least substantially U-shaped cross section.

By "at least partially arranged in the connection unit", it should be understood in particular that the drive unit is enclosed by the connection unit at least regionally and / or in sections It is also conceivable that the drive unit is arranged to at least a large part in the connection unit, wherein a drive shaft the drive unit extends at least partially out of the connection unit and a torque of the drive unit can be transmitted to a wheel base body. In this context, it should be understood in particular that a surface of the drive unit is at least 55%, advantageously at least 65%, preferably at least 75%, especially Preferably at least 85% and particularly advantageously at least 95% is enclosed by the connection unit. "Integrally" is advantageously connected at least materially, for example by a welding process, an adhesion process, an injection process and / or another The process which appears to the person skilled in the art to be useful and / or alternatively formed in one piece, for example by production from a cast and / or by production in a one- or multi-component injection molding process and advantageously from a single blank.

In this context, an "external unit" is to be understood as meaning a unit, preferably a load and / or transport unit, with which the electric motor-driven wheel device can be positively and / or positively connected, in particular on which the electric motor-driven wheel device The external unit is preferably arranged as a scooter, a roll carrier, a wheelbarrow, a shopping cart, a golf bag, a roll container

Roll board, a wheelchair, a hospital bed, a stroller, a pallet truck or another, a professional appear appropriate, load and / or transport unit formed. Advantageously, the electric motor driven wheel device forms a drive wheel of the external unit to be moved. In particular, it is conceivable that a plurality of, in particular mutually communicating, electric motor-driven wheel devices are arranged together on the external unit, in particular in order to make the external unit driveably mobile. In addition, it is proposed that the electric motor-driven wheel device has at least one, in particular metallic, cooling unit, which is arranged at least partially on the connection unit and is intended to dissipate thermal energy. A "cooling unit" should be understood to mean, in particular, a unit which is in particular operatively connected to the connection unit and is advantageously designed separately from the drive unit which is intended to receive thermal energy from a first object, in particular the connection unit, in at least one operating state and to a second object advantageously connected to the first object, advantageously to the external unit and / or the wheel base body to forward. Preferably, the cooling unit has at least one cooling element, which advantageously advantageously at least partially absorbs a thermal energy of a heat-radiating and / or heat-generating object and, in particular, can pass it on by means of a transmission of thermal energy, for example by means of heat radiation, heat transfer and in particular convection. Alternatively, the cooling unit may comprise a plurality of cooling elements, in particular identical to one another and / or differently shaped. Preferably, the cooling element is formed of a material with a particularly high heat conduction, in particular of a metal, and is advantageously at least partially formed integrally with the connection unit. As a result, in particular, a thermal energy can be forwarded particularly efficiently, thereby advantageously particularly efficiently reducing heating of the wheel device and, in particular, increasing a service life and reducing maintenance costs. Furthermore, it is proposed that the electric motor-driven wheel device has at least one communication unit which is provided for communication, in particular for transmission of electronic data, with an external communication unit. Preferably, the communication unit is intended to carry out a particularly wireless communication with at least one further, identical and / or different electric motor-driven wheel device and / or an external communication unit, in particular an external communication unit of the user. The communication unit is preferably a WLAN communication unit, a Bluetooth communication unit, a radio communication unit, an RFID communication unit, an N FC unit, as

Infrared communication unit, as a mobile network communication unit, as a Zigbee communication unit or the like. Alternatively, it is also conceivable for the communication unit to be connected to a wired and / or to a wireless transmission of electronic data to the other party. re electric motor driven wheel device and / or the external communication unit is provided. A "communication" is to be understood as meaning in this case, in particular, a bidirectional connection to a transmission of electronic data.The communication is preferably a wireless communication.The term "wireless communication" is understood to mean, in particular, that electronic data is transmitted via a advantageous disembodied information carrier, for example via sound waves, light waves and / or preferably radio waves, are transmitted, in particular decoupled from a physical connection between connection partners. The external communication unit can be used as a smartphone, as

Personal computer, as a laptop, as a netbook, as a tablet, as corporate central computer, as a clock, as an electronic wristband, as an output unit, such as a loudspeaker, as a workwear, as protective goggles, as a protective helmet, as a sensor unit, as a further electric motor driven wheel device , be designed as a corporate network, as a cloud, as the company headquarters or as another, external to a professional appear reasonable, external unit. In one embodiment as a smartphone, as a personal computer, as a laptop, as a netbook or as a tablet, an app is preferably provided for communication with the communication unit. In addition, the communication unit can be provided for external control of the electric motor-driven wheel device by means of the external communication unit. As a result, in particular, an electronic communication with an electric motor-driven wheel device can be improved and advantageously a particularly simple operation, networking and / or control of an electric motor-driven wheel device can be achieved. In addition, a control of several electric motor driven wheel devices can be achieved.

It is also proposed that the electric motor-driven wheel device has at least one gear unit which is drive-connected to the drive unit and at least partially arranged in the connection unit. Advantageously, the gear unit is designed as a gear transmission with at least one main shaft and a secondary shaft and provides a plurality of different, preferably selectable, translations of the torque of the drive unit. Preferably, the gear unit is provided for, if necessary, to increase the torque generated by means of the drive unit. your and / or subdivide into drive gears and to transmit to a drive shaft of the electric motor driven wheel device. Advantageously, a main shaft of the gear unit is connected to the drive shaft of the drive unit. However, it is also conceivable that the main shaft can be mounted axially offset from the drive shaft, wherein the drive shaft of the drive unit can be connected in particular by a deflection shaft and / or by means of a gear connection to a transmission of torque. Preferably, the gear unit is designed as a non-switchable gear unit, which preferably has a fixed, in particular unchangeable by an operator, translation. Alternatively, the transmission unit is designed as an automatically shiftable transmission unit, and / or advantageous are various translations manually, by means of a pedal, a push of a button and / or an external control, in particular via the communication unit, preferably via the external communication unit, adjustable. Driving characteristics, for example in a load acted on by an electric motor-driven wheel device and / or a driving operating state that is complicated by an inclination of the base, can advantageously be improved by this refinement. In addition, it is proposed that the electric motor-driven wheel device has at least one sensor unit arranged at least partially in the connection unit, which sensor unit comprises at least one sensor element which is provided for detecting at least one environmental parameter. An "environmental parameter" is to be understood as meaning, in particular, a parameter which is correlated with a physical, chemical, biological and / or meteorological property of the environment. an ambient condition, an ambient temperature, an ambient humidity, an ambient air pressure, an ambient brightness, an ultrasonic effect, a magnetic field, an electric field and / or an electromagnetic radiation, for example a radio and / or radar wave, and / or an engine speed and / or In particular, the environmental sensor unit comprises at least one 3-axis gyroscope and / or at least one multi-axis gyroscope. Acceleration sensor, for example a microsystem such as a MEMS, and / or at least one magnetic field sensor and / or at least one temperature sensor and / or at least one air pressure sensor. The environment sensor unit preferably has a camera, an ultrasound sensor unit, a radar sensor unit, an infrared sensor unit and / or a further environmental sensor unit that appears sensible to a person skilled in the art. Preferably, the sensor unit is at least operatively connected to the communication unit, advantageously in terms of data technology and / or electronically connected.

As a result, in particular an electric motor driven wheel device with an automatic stabilization and an advantageously improved orientation can be achieved so that autonomous driving characteristics can be optimized.

It is also proposed that the electric motor-driven wheel device has at least one electronic unit which is arranged at least for the most part in the connection unit and is provided at least for a control and / or regulation of at least the drive unit. Advantageously, the electronic unit comprises a control and / or regulating unit. In this context, a "control and / or regulating unit" is to be understood as meaning in particular a unit having at least one information input, an information processing and an information output Advantageously, the electronic unit has at least one processor, a memory, an input and output means, further electrical components The components of the electronics unit are preferably arranged on a common circuit board and / or advantageously arranged in a common housing The electronic unit preferably has at least one evaluation unit, which provides for an evaluation of parameters that are detectable, for example, by the sensor unit of the wheel device is. Advantageously, the evaluation unit is electronically and / or data-technically with the communication unit for acquiring communication data, for example for acquiring control commands, and / or with the sensor unit for acquiring environmental parameters and / or for controlling the control and / or regulating unit by means of a communication signal and / or an environmental parameter and / or in dependence on a communication signal and / or provided by an environmental parameter. As a result, in particular a control of the electric motor-driven wheel device can be simplified and, advantageously, an autonomous driving operating state can be improved.

In a preferred embodiment of the invention it is proposed that the electric motor-driven wheel device has at least one power supply unit, which is arranged at least for the most part in the connection unit. The energy supply unit preferably has at least one

Energy supply element, which is advantageously formed exchangeable without tools and / or arranged in a receiving area in the connection unit. Preferably, the receiving area has at least one mechanical and / or electronic interface for the energy supply element, which is particularly preferably designed as a power and data interface, wherein the energy supply element is advantageously connectable by means of the interface with the electronic unit. The energy supply unit preferably has a plurality of, in particular, identically designed energy supply elements. Advantageously, the energy supply element has at least one battery, particularly advantageously at least one, rechargeable

Battery, such as a battery, on. Particularly advantageously, the energy supply element is designed as a battery. In particular, a plurality of energy supply elements forms a battery pack. It is also conceivable that the energy supply element comprises at least one supercapacitor, at least one capacitor and / or a solar cell and that the energy supply element is designed to be wirelessly chargeable. The energy supply unit preferably has at least one energy supply electronics which is designed as battery management electronics and is provided to detect and / or monitor a charging process of the energy supply element. This can advantageously a mobility and consequently a

Operating flexibility can be improved. In addition, a particularly space-saving energy supply unit can be achieved.

In addition, it is proposed that the electric motor-driven wheel device at least one arranged at least partially in the connection unit Braking unit which is provided for generating a force acting on the Radgrundkörper braking force. In particular, the at least one brake unit generates at least one braking force, which preferably counteracts a rotational movement of the wheel base body. In particular, the brake unit is intended to reduce a driving speed. A braking force can be embodied as a braking force acting on the wheel main body and / or the axis of rotation of the drive unit as a braking unit operated by a mechanical, electronic, electromechanical, electromagnetic brake unit and / or a brake unit operated with an electroor magnetorheological fluid. Advantageously, a braking force by means of the brake unit manually by means of an electromechanical actuator, for example by means of a pedal and / or a button, by means of an electronic, advantageously wireless control, for example by the application of the external communication unit and preferably automatically generated. In this context, it is conceivable that the sensor unit detects a spatial distance of the user and / or the external unit from the electric motor-driven wheel device and depending on the spatial distance a safety function, in particular comprising an automatic actuation of the brake unit to a deceleration movement of the electric motor driven Wheel device or blocking the drive unit of the electric motor driven wheel device executes. It is also conceivable that the environmental sensor unit is provided to determine the spatial distance by means of a received signal strength of a signal, in particular a Bluetooth, infrared, RFID or N FC signal, the external unit. Advantageously, the brake unit is arranged at least for the most part in the connection body and at least in a brake operating state operatively connected to the Radgrundkörper and / or the axis of rotation of the Radgrundkörpers. Alternatively, a brake unit can also cause a shutdown and / or blocking of the drive unit. As a result of this refinement, it is advantageously possible to increase safety, as a result of which operating convenience can be improved.

In order, in particular, to vary a direction of travel and thus advantageously to widen a field of application of the electric motor-driven wheel device, it is also proposed that the electric motor-driven wheel device has at least one articulated unit which can be connected between the connecting device. training unit and the external unit can be arranged and rotatably supports the connection unit relative to the external unit. Advantageously, the hinge unit is at least partially integrated in the connection unit and / or at least partially non-positively and or positively formed with the connection unit. Preferably, the hinge unit is at least partially formed integrally with the connection unit. In addition, the hinge unit is at least partially integrated into a connected external unit, in particular a driving unit, and / or at least partially non-positively and / or positively formed with the external unit. Advantageously, the connection unit is formed separable by the hinge unit of a driving unit. In particular, the hinge unit has at least one rotary joint, which defines a pivot axis, which is arranged in a driving operating state perpendicular to the direction of travel and may alternatively be designed as a ball joint, as a wheel bearing and / or as a hinge joint. In particular, the joint unit is provided to guide the external unit in a direction of travel along a curvilinear lane adapted to a curve. Preferably, the hinge unit is connected at least to a manual and / or automatic control of a direction of travel of the motor-driven wheel device with the electronic unit and / or the sensor unit. As a result, in particular an advantageously flexible direction of travel of the wheel device can be set and an operating flexibility and an autonomous driving operation can be improved.

In addition, a wheeled vehicle with at least one electric motor driven wheel device, in particular with a plurality of electric motor driven wheel devices proposed. By means of this configuration, in particular a particularly space-saving wheeled vehicle with increased stability for a consequently wide range of applications, in particular in a load transport area, can be provided. In addition, advantageously, a heat energy generated during operation can be dissipated by an improved heat conduction, thereby in particular increasing a service life and an operating performance, and advantageously reducing maintenance and / or repair expenditure.

The electric motor-driven wheel device according to the invention and / or the wheeled vehicle according to the invention should / should not be limited to the above-described be written application and embodiment limited. In particular, the inventive electromotively driven wheel device and / or the wheeled vehicle according to the invention can / have a number deviating from a number of individual elements, components and units specified here in order to fulfill a mode of operation described herein.

drawing

Further advantages emerge from the following description of the drawing. In the drawings, an embodiment of the invention is shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

Fig. 1 is a perspective view of a designed as a roller board wheeled vehicle with a plurality of electric motor driven wheel devices and

Fig. 2 is an electric motor driven wheel device in a perspective view.

Description of the embodiment

FIG. 1 shows a wheeled vehicle 40 with at least one wheel-driven driven wheel device 10, in particular with a plurality of wheel-driven wheel-mounted devices 10. The wheeled vehicle 40 has an external unit 16. The external unit 16 is formed in the embodiment shown as a load rest. Alternatively, the external unit 16 may also be referred to as a running board, a suitcase, a load container, a shopping basket, a golf bag, a container, a chair, a hospital bed, a stroller, a lifting device Shoe or as another, an expert appear appropriate sense, external unit 16 may be formed.

The electric motor driven wheel device 10 is preferably designed as a smartwheel. The wheeled vehicle 40 preferably has a plurality of electric motor-driven wheel devices 10, which have an at least substantially analogous configuration to each other, so that in particular a description of a single electric motor-driven wheel device 10 can be read on all further electric motor driven wheel devices 10 of the wheeled vehicle 40. The wheeled vehicle 40 preferably has four electric motor driven wheel devices 10. The electric motor-driven wheel device 10 of the wheeled vehicle 40 is arranged in an edge region, in particular in a corner, of the external unit 16. The electric motor driven wheel device 10 is non-positively and / or positively connected to the external unit 16, in particular by means of a connection unit 14 of the electric motor driven wheel device 10. Additionally or alternatively, the wheel vehicle 40 could be one of four different number of electric motor driven wheel devices 10, for example three or six electric motor driven wheel devices 10 have. In addition, the electric motor-driven wheel device 10 may also be arranged at a position deviating from the corners of the external unit 16 of the wheeled vehicle 40. The wheeled vehicle 40 is preferably designed as a roller board. Alternatively, the wheeled vehicle 40 may also be used as a scooter, a wheeled suitcase, a wheelbarrow, a shopping cart, a golf bag, a roll container, a wheelchair, a hospital bed, a stroller, a pallet truck, a roller skate, a skateboard, a scooter or as another, a wheeled vehicle 40 that appears appropriate to a person skilled in the art.

FIG. 2 shows the electric motor-driven wheel device 10. The electric motor-driven wheel device 10 has at least one wheel base body 12 and at least the connection unit 14 arranged at least for the most part outside the wheel base body 12. The connection unit 14 is preferably arranged completely outside the wheel base 12. The Radgrundkörper 12 is preferably cylindrical. The Radgrundkörper 12 has a circular outer periphery. The Radgrundkörper 12 has a partially cylindrical jacket-shaped outer contour. The Radgrundkörper 12 defines a rotation axis 38. The rotation axis 38 is formed as a rotation axis of the Radgrundkörpers 12. The axis of rotation 38 is the axis of symmetry of the

Wheel base 12 is formed. The axis of rotation 38 extends through a center of mass of the Radgrundkörpers 12. The outer periphery is arranged in a plane which is perpendicular to the axis of rotation 38. The outer circumference is arranged in a plane which is arranged perpendicular to the axis of rotation 38. The Radgrundkörper 12 has a receiving area for at least one contact element, which is provided for rolling on a substrate and may be formed as a tire and / or a tread. The outer contour of Radgrundkörpers 12 is connected to the contact element. For example, the Radgrundkörper 12 form a rim. In particular, the Radgrundkörper 12 forms a hub of a wheel with hub drive. The Radgrundkörper 12 is intended to cause a movement of the electrically driven wheel device 10 by rolling on a base. The connection unit 14 has, viewed in a direction perpendicular to the axis of rotation 38 and in a direction perpendicular to a direction of travel of the motor-driven wheel device 10, a U-shaped cross section. Preferably, the connection unit 14 is formed as a mounting bracket, which is intended to arrange the Radgrundkörper 12 on the load rest of the wheeled vehicle 40, in particular to attach it. The connection unit 14 surrounds the wheel base body 12 of two mutually remote sides of the Radgrundkörpers 12. The connection unit 14 surrounds the Radgrundkörper 12 of two mutually remote sides of the Radgrundkörpers 12 along the axis of rotation 38. Alternatively, the connection unit 14 may be disposed on one side of the Radgrundkörpers 12 , wherein a side facing away from the side of the Radgrundkörpers 12 may be free of the connection unit 14. The connection unit 14 is provided to rotatably support the Radgrundkörper 12. The wheel base body 12 is preferably mounted rotatably on the connection unit 14 relative to the connection unit 14 and / or relative to the load support. The connection unit 14 is made of a solid material. The connection Training unit 14 is made of a metal. In addition, the connection unit 14 may alternatively also be formed at least partially from a plastic.

The connection unit 14 preferably has at least two attachment elements 42, 44. The connection elements 42, 44 are arranged on two opposite sides of the Radgrundkörpers 12 along the axis of rotation 38 of the Radgrundkörpers 12. A first connection element 42 of the connection elements 42, 44 is arranged along the axis of rotation 38 on the first side of the wheel base 12. A second connecting element 44 of the connecting elements 42, 44 is along the axis of rotation 38 on the first side of the

Wheel base 12 remote from the second side of the Radgrundkörpers 12 arranged. The first connection element 42 and the second connection element 44 are formed differently from each other. The first connection element 42 and the second connection element 44 have mutually differing outer contours. The first attachment element 42 and the second attachment element

44 are made of the same material. The first connection element 42 and the second connection element 44 are made of metal. The first connection element 42 and the second connection element 44 are preferably made of aluminum. The first connection element 42 and the second connection element 44 are non-positively and / or positively connected with each other. The first connection element 42 and the second connection element 44 are integrally formed. Alternatively, the first and the second connecting element 42, 44 may be integrally connected to each other and also be made of different materials, wherein at least the first and / or the second connection element 42, 44 of steel and / or of a different metal

Material can be formed.

The first connection element 42 of the connection elements 42, 44 is formed as an angle-shaped element. The first connection element 42 of the connection elements 42, 44 has two flat legs 46, 48, which are integrally formed with each other. The flat legs 46, 48 are arranged perpendicular to each other. A first leg 46 of the flat legs 46, 48 is arranged parallel to the first side of the Radgrundkörpers 12. The first leg 46 is arranged on the first side of the wheel base 12. A second leg 48 of the flat legs 46, 48 is perpendicular to the first side of the wheel arranged base body 12. The flat legs 46, 48 are arranged perpendicular to each other.

The second connection element 44 of the connection elements 42, 44 is plate-shaped. The second connection element 44 is non-positively and / or positively connected to the first connection element 42. The second connection element 44 is arranged on the first connection element 42 facing away from the second side of the Radgrundkörpers 12. Alternatively, it is possible to dispense with a second connection element 44.

The electric motor driven wheel device 10 has at least one drive unit 18. The drive unit 18 is partially arranged in the connection unit 14. The drive unit 18 is arranged in the first connection element 42 of the connection unit 14. The drive unit 18 is arranged in the first leg 46 of the flat legs 46, 48 of the first connection element 42. The drive unit 18 is operatively connected to the Radgrundkörper 12. The drive unit 18 is provided to provide a torque for the Radgrundkörper 12 and / or transfer to the Radgrundkörper 12. The drive unit 18 is intended to effect a movement of the Radgrundkörpers 12.

The drive unit 18 has a brushless electric motor 50. The electric motor 50 is designed as a DC motor. Alternatively, the electric motor 50 may be formed as an AC motor or the like. The electric motor 50 has a rotor and a stator (not shown here). The rotor can with a

Drive shaft (not shown here), preferably in one piece, be connected. The electric motor 50 has a further axis of rotation of the rotor (not shown here). The further axis of rotation of the rotor is arranged parallel to the axis of rotation 38 of the Radgrundkörpers 12. The electric motor 50 is provided to transmit a torque to the axis of rotation 38 of the Radgrundkörpers 12. Of the

Electric motor 50 is provided to cause a rotational movement of the Radgrundkörpers 12 about the axis of rotation 38. The electric motor 50 is connected to the wheel base body 12 in terms of power. The electric motor 50 is operatively connected to the Radgrundkörper 12 is formed. In addition, it is possible for the electric motor-driven wheel device 10 to have at least one further motor. tor, which is connected in parallel or in series for an improved transmission of a torque to the electric motor 50.

The electric motor driven wheel device 10 has at least one cooling unit 20. The cooling unit 20 is arranged in the connection unit 14.

The cooling unit 20 is formed integrally with the connection unit 14. The cooling unit 20 is intended to dissipate thermal energy. The cooling unit 20 is provided to forward thermal energy to the wheel base body 12 and / or to an environment surrounding the connection unit 14 and / or the wheel base 12. The cooling unit 20 is intended to pass thermal energy to the external unit 16. The cooling unit 20 is intended to transmit thermal energy to the environment. The cooling unit 20 is formed of a material having a high thermal conductivity. The cooling unit 20 is formed of metal. The cooling unit 20 is preferably made of aluminum. Alternatively, the cooling unit 20 may also be formed from a steel other than steel, such as steel, and / or at least partially graphite and / or carbide.

The electric motor-driven wheel device 10 has at least one gear unit 24. The transmission unit 24 is partially in the connection unit

14 arranged. The gear unit 24 is arranged for the most part in the connection unit 14. The gear unit 24 is arranged in the first leg 46 of the first connection element 42. The gear unit 24 is operatively connected to the drive unit 18. The gear unit 24 is drivingly connected to the drive unit 18. The gear unit 24 is formed as a gear transmission. The transmission unit 24 includes at least two transmission shafts (not shown here). The transmission shafts are arranged parallel to the axis of rotation 38 of the Radgrundkörpers 12. At least one of the transmission shafts is non-positively and / or positively and / or materially connected to the rotor of the drive unit 18. The gear unit 24 has a plurality of gears, which are arranged coaxially with the transmission shafts. The transmission unit 24 may provide a plurality of gear ratios.

The electric motor-driven wheel device 10 has at least one electronic unit 30. The electronics unit 30 is connected to the connection unit 14. orderly. The electronics unit 30 is integrated into the connection unit 14. The electronics unit 30 is arranged completely in the connection unit 14. Preferably, the electronics unit 30 is completely integrated in the connection unit 14. The electronic unit 30 is disposed in a vicinity of the drive unit 18. The electronics unit 30 is arranged in the first leg 46 of the first connection element 42. The electronic unit 30 is formed as a circuit board. The electronic unit 30 is provided for controlling and / or regulating at least the drive unit 18. The electronics unit 30 comprises at least one control and / or regulating unit. The control and / or regulating unit is arranged in the electronic unit 30. The control and / or regulating unit is in the

Electronic unit 30 integrated. The control and / or regulating unit is formed integrally with the electronic unit 30. The control and / or regulating unit is preferably provided at least for a control and / or regulation, in particular of the drive unit 18 of the electric motor-driven wheel device 10. The control and / or regulating unit is provided for at least manual and / or automatic control and / or regulation of the electric motor-driven wheel device 10.

The electric motor driven wheel device 10 has at least one communication unit 22. The communication unit 22 is arranged in the connection unit 14. Preferably, the communication unit 22 is largely integrated into the connection unit 14. Preferably, the communication unit 22 is integrated in the first leg 46 of the first connection element 42. The communication unit 22 is intended for communication, in particular for transmission of electronic data, with an external communication unit 54. The communication unit 22 is provided in the present case for wireless communication with the external communication unit 54. The communication unit 22 is provided to receive the electronic data from the external communication unit 54. The communication unit 22 is provided for electronic

Send data to the external communication unit 54. The communication unit 22 is connected to the external communication unit 54 in terms of data technology. The external communication unit 54 is connected to the communication unit 22 via a radio link, preferably WLAN and / or Bluetooth. The external communication unit 54 is provided to transmit electronic data to the communication unit 22. The external communication unit 54 is provided to transmit control and / or control data to the communication unit 22. The external communication unit 54 is preferably designed as a smartphone. Alternatively, an external communication unit 54 may also be provided for an authorization function of the electric motor-driven wheel device 10 or a function that appears expedient to the person skilled in the art. Alternatively or additionally, the external communication unit 54 as a personal computer, as a laptop, as a netbook, as a tablet, as a corporate central computer, as a clock, as an electronic bracelet, as an infrared remote control, as an output unit, such as speakers, as work clothes, as Protective goggles, as a protective helmet, as a corporate network, as a cloud, as the company headquarters or as another, an expert appear appropriate sense, external communication unit 54 may be formed. In addition, the external communication unit 54 may alternatively or additionally also be electrically connected to the communication unit 22 by means of a cable.

The electric motor driven wheel device 10 has at least one sensor unit 26. The sensor unit 26 is arranged in the connection unit 14. Preferably, the sensor unit 26 is arranged in the second connection element 44 of the connection unit 14. The sensor unit 26 is preferably aligned in a direction of travel and perpendicular to the axis of rotation 38 of the Radgrundkörpers 12. The sensor unit 26 is provided for detecting at least one environmental parameter. The sensor unit 26 is intended to detect an environmental parameter. The sensor unit 26 comprises at least one sensor element 28, which is provided to detect the environmental parameter. Preferably, the sensor element 28 may be formed as a sensor for a coefficient of friction of a floor covering, which is intended to detect a coefficient of friction of a floor covering. In addition, the sensor unit 26 may comprise further sensor elements, which may be provided to detect a different from a coefficient of friction of the flooring environmental parameter. The electric motor driven wheel device 10 has at least one power supply unit 32. The energy supply unit 32 is for the most part arranged in the connection unit 14. The energy supply unit 32 is preferably arranged completely in the connection unit 14. Preferably, the energy supply unit 32 is arranged in the second connection element 42 of the connection unit 14. The power supply unit 32 is arranged in the second leg 48 of the first connection element 42. Alternatively or additionally, it is possible to arrange the power supply unit 32 in the second leg 48 of the first connection element 42 and / or in the second connection element 44.

The power supply unit 32 is preferably arranged in the vicinity of the electronic unit 30. The power supply unit 32 is electrically connected to the electronic unit 30. The power supply unit 32 is intended to provide an electrical energy for the electronic unit 30. The

Power supply unit 32 is intended to store an electrical energy. The power supply unit 32 comprises at least one energy supply element 56, which is designed as a battery, preferably as a rechargeable battery. In the exemplary embodiment shown, the energy supply unit 32 has a plurality of energy supply elements 56 of identical construction to the energy supply element 56. Alternatively, the energy supply unit 32 may comprise an electric generator, a capacitor and / or a supercapacitor for storing an energy provided by the drive unit 18 and / or a solar panel for storing solar energy. In addition, it is conceivable that the electric motor driven wheel device 10 comprises a plurality of power supply units 32 which are different or identical to each other and arranged in the first connection element 42 and / or in the second connection element 44.

The electric motor driven wheel device 10 has at least one brake unit 34. The brake unit 34 is arranged in the connection unit 14. The brake unit 34 is partially arranged in the connection unit 14. The brake unit 34 is preferably arranged in the second connection element 44 of the connection unit 14. The brake unit 34 is in the vicinity of the Rad basic body 12 is arranged. The brake unit 34 is arranged on the axis of rotation 38 of the Radgrundkörpers 12. The brake unit 34 is provided for generating a force acting on the Radgrundkörper 12 braking force. The brake unit 34 is provided to reduce a rotational speed of the Radgrund- body 12. The brake unit 34 is provided to reduce a traveling speed of the electric motor driven wheel device 10.

The brake unit 34 is operatively connected and / or operatively connected to the wheel base 12 and / or formed and / or arranged with the drive unit 18. The brake unit 34 may comprise a mechanical brake, for example a frictionally engaged brake and / or a drum brake, a brake operated with an electrolytic or magnetorheological fluid, an electrostatic and / or a magnetic brake. Alternatively or additionally, the brake unit 34 may have a further brake, which is of identical design or different from the brake and / or arranged in the first connection element 42 and / or is operatively connected to the drive unit 18. It is also possible that the brake unit 34 has a transmission brake. It is also conceivable that the electric motor-driven wheel device 10 does not comprise a brake unit.

The electric motor driven wheel device 10 has at least one hinge unit 36. The hinge unit 36 is arranged on the connection unit 14. The joint unit 36 is formed at least partially in one piece with the connection unit 14. The hinge unit 36 is arranged between the connection unit 14 and the external unit 16 (see FIG. The hinge unit 36 is at least partially connected positively and / or positively to the external unit 16. The hinge unit 36 has at least one rotary joint. The pivot joint of the joint unit 36 defines a pivot axis 52, which is aligned perpendicular to the direction of travel of the motor-driven wheel device 10 and perpendicular to the axis of rotation 38 of the Radgrundkörpers 12 (see Figure 2). The hinge unit 36 rotatably supports the link unit 14 relative to the external unit 16. The hinge unit 36 rotatably supports the link unit 14 about the pivot axis 52 relative to the external unit 16. In addition, the hinge unit 36 may have another, to the pivot axis 52 and to the axis of rotation 38 vertically aligned to define further pivot axis, whereby the connection unit 14 can be mounted rotatably relative to the external unit 16 about the further pivot axis.

Claims

claims

1. Electromotive driven wheel device, in particular smartwheel, with at least one Radgrundkörper (12), with at least one connection unit (14) to connect the Radgrundkörpers (12) with an external unit (16), wherein the connection unit (14) at least partially outside of Rad basic body (12) is arranged, and with at least one drive unit (18) to a drive of Rad basic body (12), characterized in that the drive unit (18) at least partially in the connection unit (14) is arranged.

2. Electromotive driven wheel device according to claim 1, characterized by at least one, in particular metallic, cooling unit (20), which is at least partially disposed on the connection unit (14) and is intended to dissipate thermal energy.

3. Electric motor driven wheel device according to claim 1 or 2, characterized by at least one communication unit (22) which is provided for a communication, in particular for a transmission of electronic data, with an external communication unit (54).

4. Electromotive driven wheel device according to one of the preceding claims, characterized by at least one gear unit (24) which is drivingly connected to the drive unit (18) and at least partially disposed in the connection unit (14). Electromotive driven wheel device according to one of the preceding claims, characterized by at least one at least partially in the connection unit (14) arranged sensor unit (26) which comprises at least one sensor element (28) which is provided for detecting at least one environmental characteristic.

Electromotive driven wheel device according to one of the preceding claims, characterized by at least one electronic unit (30), which is arranged at least for the most part in the connection unit (14) and at least to a control and / or regulation of at least the drive unit (18) is provided.

Electromotive driven wheel device according to one of the preceding claims, characterized by at least one energy supply unit (32), which is arranged at least for the most part in the connection unit (14).

Electromotive driven wheel device according to one of the preceding claims, characterized by at least one at least partially in the connection unit (14) arranged brake unit (34) which is provided for generating a force acting on the Radgrundkörper (12) braking force.

Electromotive driven wheel device according to one of the preceding claims, characterized by at least one hinge unit (36) which can be arranged between the connection unit (14) and the external unit (16) and rotatably supports the connection unit (14) relative to the external unit (16).

Wheeled vehicle (40) with at least one electric motor driven wheel device, in particular with a plurality of electric motor driven wheel devices, according to one of the preceding claims.