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US 9,540,069 B2Granted
Vehicle, particularly a bicycle, comprising an electrical auxiliary drive
OwnerRolf Strothmanninventor
Life of this patent
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Abstract
A vehicle, particularly a bicycle, including a crank drive that is to be actuated by muscular force and that is disconnectably drive-connected to at least one driven wheel, and also including an electrical auxiliary drive for assisting the crank drive. The vehicle can be driven solely by the auxiliary drive when the drive connection between the crank drive and the wheel is disconnected. In addition, a control device for the auxiliary drive is preferably connected to a sensor which detects the crank rotational speed.
Claims12
A vehicle, comprising:
- at least one driven wheel;
- a muscle-powered crank drive that is disconnectedly drive-connected to the at least one driven wheel;
- an electrical auxiliary drive assisting the crank drive, wherein when the drive connection between the crank drive and the wheel is disconnected, the vehicle is driveable by the auxiliary drive alone;
- and, a control unit for the auxiliary drive, the control unit being connected to a sensor for detecting crank drive torque and to a sensor detecting a kinematic variable of the crank's rotational movement, wherein the kinematic variable is rotational speed of the crank, wherein the control unit is configured to transition, at a predetermined crank rotational speed upon disengagement of the drive connection from control of the auxiliary drive based on at least the detected crank drive torque to control of the auxiliary drive based on at least the detected crank rotational speed.
1 more element
Dependencies are inferred from the claim text.