vehicle, having at least one wheel

Abstract

Vehicle, having at least one wheel wherein an internal toothing is arranged on the wheel, which engages with a gear that can be driven by an electric motor.

Description

[0001] The invention relates to a vehicle comprising at least one wheel.

[0002] It is generally known that bicycles are propelled by means of a pedal via a chain drive.

[0003] From DE 203 14 210 U1 a bicycle drive device is known in which an electric motor drives a plastic drive ring.

[0004] A bicycle with an auxiliary motor is known from DE 32 34 729 A1.

[0005] From DE 10 2010 044 977 A1 a device for the contactless transfer of energy to a vehicle is known.

[0006] A vehicle with an energy storage system is known from DE 10 2010 053 011 A1.

[0007] From JP 2012 - 034 445 A a motor-driven two-wheeler with a power receiver is known.

[0008] From DE 690 31 993 T2, an auxiliary drive for vehicles is known.

[0009] The invention is therefore based on the objective of further developing a vehicle in a simple way.

[0010] According to the invention, the problem is solved in the vehicle according to the features specified in claim 1.

[0011] Important features of the invention in the vehicle are that it has at least one wheel, wherein an internal toothing is arranged on the wheel which engages with a gear that can be driven by an electric motor.

[0012] A key advantage is the ability to implement a more slip-free drive system. Furthermore, a planetary or spur gear transmission can be eliminated, and a more compact vehicle design is achieved by driving the wheel via a hub drive. Components are easily replaceable, and maintenance is very simple. The use of coarse gear teeth (module greater than 5 mm) makes the drive resistant to dirt. If the internal gearing is designed separately, it can be easily retrofitted to existing vehicles using state-of-the-art technology. Preferably, the part supporting the internal gearing is bonded to the wheel hub using adhesive.

[0013] In a preferred embodiment, the vehicle has an energy storage device from which the electric motor can be powered. The advantage here is that the vehicle can be driven electrically.

[0014] In an advantageous embodiment, the vehicle has a secondary winding from which the energy storage device can be charged and / or the motor can be powered.

[0015] In particular, energy can be inductively supplied to the secondary winding from a primary conductor located outside the vehicle. An advantage of this is that the energy storage device can be charged without contact.

[0016] In an advantageous embodiment, the vehicle has a chain drive for driving the wheel, which is arranged in a first axial, in particular off-center, area of ​​the wheel.

[0017] In particular, the chain drive comprises a pedal which drives a first gear of the chain drive, and a chain which is driven by the first gear, so that a second gear can be driven by the chain, from which torque can be transmitted to the wheel, in particular wherein the second gear is rotationally fixed or can be connected to the wheel via a gearbox, in particular dependent on the direction of rotation. It is advantageous that the vehicle can be designed as a bicycle which has an electric motor auxiliary drive that reduces the rider's workload.

[0018] In an advantageous embodiment, the gear engaging with the internal teeth is arranged on the side of the wheel facing away from the chain drive. especially off-center, especially in an axial area that is positioned off-center. It is advantageous that the vehicle's center of gravity can be arranged as close as possible to the plane of symmetry of the wheel or the vehicle.

[0019] In an advantageous embodiment, the wheel has a rim in which the internal teeth are formed integrally, particularly off-center in the axial direction. An advantage of this design is that a small number of parts are required.

[0020] In a preferred embodiment, the internal teeth are formed on a ring section or hollow gear which is connected to the wheel rim. An advantage of this design is that different materials can be used for the rim.

[0021] In a preferred embodiment, the wheel has spokes that are connected centrally to the wheel rim. An advantage of this design is that the wheels can be used for bicycles according to the state of the art.

[0022] Further advantages arise from the dependent claims. The invention is not limited to the combination of features of the claims. For those skilled in the art, further meaningful combinations of claims and / or individual claim features and / or features of the description and / or the figures will become apparent, in particular from the problem statement and / or the problem arising from a comparison with the prior art.

[0023] The invention will now be explained in more detail with the help of illustrations: In the Fig. Figure 1 shows a gear 2 engaged with an internal toothing 1, in particular an internally toothed ring gear, which is externally toothed and whose largest outer diameter and / or tip circle diameter is smaller than the tip circle diameter and / or smallest diameter of the internal toothing 1. In the Fig. Figure 2 shows a side view of a vehicle, in particular a two-wheeler. In the Fig. Figure 3 shows a corresponding oblique view, with an additional enlarged section shown.

[0024] As shown in the figures, the vehicle has an energy storage device, in particular a battery, from which an electric motor 3 can be electrically supplied when the vehicle is to be driven by a motor.

[0025] When traveling downhill, the electric motor 3 can be operated in generator mode, so that the generated electrical energy can be supplied to the energy storage device 5 and thus recharged.

[0026] A chain drive can be operated by means of a pedal, which can be used to drive a wheel of the vehicle in addition to or as an alternative to the electric motor 3. The chain drive is arranged on a first side of the vehicle and / or the wheel, i.e., in a first axial area that does not include the wheel center. The wheel axle defines the axial direction.

[0027] The electric motor 3 is arranged on the side of the wheel facing away from the chain drive, and is in turn arranged in an axial area that does not include the center of the wheel.

[0028] The motor 3 is attached to the linkage of the vehicle, with the wheel being rotatably mounted on the linkage.

[0029] The gear 2 driven by the motor 3, as well as the internal toothing in mesh with this gear 2, is arranged axially off-center, i.e. in an axial area that does not have the wheel center.

[0030] In the center of the wheel, i.e., in the plane of symmetry of the wheel, regularly spaced recesses are arranged on the inner circumference of the wheel, especially its rim, into which spokes protrude and are connected to the rim of the wheel.

[0031] The axially eccentric internal toothing 1 is either integrally formed on the rim or wheel, or alternatively designed as a separate ring gear connected to the rim, as shown in the figures.

[0032] By arranging the motor 3 and the internal toothing 1 on the axial side facing away from the chain drive, the center of gravity can be easily positioned as close as possible to the plane of symmetry of the wheel and thus also of the vehicle.

[0033] In further embodiments of the invention, the vehicle is provided with a secondary winding to which electrical energy can be inductively transferred from a stationary primary conductor, for example, one laid in the floor. Thus, the energy storage device 5 and / or the motor 3 can be charged from the secondary winding. Reference symbol list 1 Internal toothing 2 gear 3 Electric motor 4 rim 5 Energy storage

Claims

[1] vehicle, having at least one wheel wherein the vehicle has a chain drive for driving the wheel, which is arranged in a first axial off-center area of ​​the wheel, wherein an internal toothing (1) is arranged on the wheel which engages with a gear (2) which can be driven by an electric motor (3), wherein the vehicle has an energy storage device (5) from which the electric motor (3) can be supplied, wherein the vehicle has a secondary winding from which the energy storage device (5) can be charged and / or the motor can be powered, wherein energy can be inductively supplied to the secondary winding from a primary conductor located outside the vehicle, wherein the internal toothing (1) is formed on a ring part or ring gear which is bonded to the rim (4) of the wheel, wherein the chain drive has a pedal which makes a first gear (2) of the chain drive driveable, and a chain which is driveable by the first gear (2) so that a second gear (2) is driveable by the chain, from which torque can be transmitted to the wheel, wherein the second gear (2) is rotationally fixed or can be connected to the wheel via a transmission, wherein the gear (2) engaging with the internal toothing (1) is arranged on the side of the wheel facing away from the chain drive in an axial area that is arranged off-center, wherein the rim (4) is made of a different material than the part having the internal teeth (1). [2] Vehicle according to claim 1, characterized by , that the wheel has a rim (4) on which the internal toothing (1) is formed in one piece - off-center in the axial direction. [3] Vehicle according to claim 2, characterized by, that the internal toothing (1) is formed on a ring part or ring gear which is connected to the rim (4) of the wheel. [4] Vehicle according to at least one of the preceding claims, characterized by , that the rim (4) is made of aluminium and the part is made of cast steel or steel. [5] Vehicle according to at least one of the preceding claims, characterized by , that the wheel has spokes which are connected centrally to the rim (4) of the wheel.

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