A shifting device for a transmission unit of a vehicle, in particular a vehicle that is driven by muscle force. The transmission unit has a first shaft, which is formed as a hollow shaft, on which a plurality of free gears is mounted. The free gears are in engagement with a corresponding plurality of gearwheels, which are mounted on a second shaft, wherein the free gears are connectable to the first shaft by means of selecting devices. The selecting devices can be actuated by means of a camshaft arranged coaxially in the first shaft, wherein the camshaft is connected to a driving device in order to be rotated relative to the first shaft to actuate the selecting devices.

A hybrid drive for an electric bicycle comprising a pedal crank drive that contains a pedal crank axle connected to pedal cranks at both ends, an electromotive drive electrically connected to an accumulator, which contains two electric motors that are connected to different transmission elements of a superposition transmission, which on the drive side is connected to the pedal crank drive and on the output side is connected to the sprocket of a chain drive of the electric bicycle recuperative electromotive braking of the electric bicycle with charging of the accumulator.

A bicycle drive unit includes a planetary gear mechanism, a first motor and a power switching mechanism. The planetary gear mechanism includes an input body, an output body and a transmitting body. The input body receives a rotational input of a crankshaft. The output body outputs the rotation of the planetary gear mechanism to the outside. The first motor controls the rotation of the transmitting body. The output body rotates in a direction corresponding to a first rotational direction when rotation in the first rotational direction is input from the crankshaft to the input body. The power switching mechanism rotates the output body in a direction corresponding to a second rotational direction when rotation in the second rotational direction is input from the crankshaft to the input body.

A friction-ring gear unit for a vehicle that is operable by motor power and/or pedaling power, in particular for an electrical bicycle having an electric motor, comprising a crankshaft for pedal cranks, and an inner friction ring (26) and an outer friction ring, as well as at least one rotatable dualcone roller which is situated on a roller carrier and is in frictional engagement with the inner friction ring and the outer friction ring, the friction-ring gear unit being situated coaxially around the crankshaft.

A driving device for an electric vehicle includes a pedal shaft, first and second electric motors, an output shaft, and a superposition transmission whose gear ratio is steplessly adjustable by way of the electric motors. The transmission also couples the pedal shaft and the output shaft to each other. A torque generated by the first electric motor and/or the second electric motor can be at least partially transmitted to the output shaft. The driving device further includes an electronic anti-theft device used to lock the bicycle. When locked, at least one of the electric motors is operable to generate a torque that counteracts a rotation of the pedal shaft in a forward direction of rotation to inhibit theft of the bicycle.

The invention discloses a bicycle drive system (10) and a kit. The drive system comprises a drive unit (15) comprising a housing, a motor unit (20) having a stator (21), a rotor (22) and an output shaft and accommodated in the housing, and a first stage deceleration unit (30) having an input part connected to the output shaft of the motor unit and an output part; a mounting unit (50) configured to secure and hold the drive unit on a bicycle body (70); and a second stage deceleration unit (40) arranged external to the drive unit and detachably mounted on the first stage deceleration unit for connection to a pedal assembly (80) to transfer a drive force from the output part of the first stage deceleration unit to chainrings (82) of the pedal assembly. The drive unit, the mounting unit and the second stage deceleration unit are each provided as a modular part for assembling to the bicycle. The invention provides a customizability of the drive system.

A drive system, wherein: a drive shaft and an output shaft as well as a second motor, to-gether with the second rotor shaft thereof, are arranged coaxially in a first shafting; a multi-stage cross-drive steering transmission of the drive system, together with a sun gear, a ring gear and a planetary carrier, is designed solely as a three-shaft planetary gear stage, which is arranged in a second shafting parallel to the first shafting; and a first motor is arranged in a third shafting together with the first rotor shaft thereof, said third shafting being parallel to the first shafting and to the second shafting.

A bicycle controller limits decreases in the assist force when the rotational speed of a crank changes. The bicycle controller can be mounted on a bicycle including a first transmission having at least two shift stages and configured to change a ratio of rotation of a wheel to rotation of a crank, a motor that provides assistance to human power input to the crank, and a second transmission configured to transmit a rotation force from the motor to a power transmission path extending from the crank to the wheel without changing the ratio of the rotation of the wheel to the rotation of the crank. The bicycle controller includes an electronic control unit that controls the second transmission in accordance with a condition of the bicycle and either one of a condition of the first transmission and a shift instruction to the first transmission.

A bicycle driving device that allows a second motor to be reduced in size includes a first planetary mechanism, a first motor, a second motor, and a speed reduction mechanism. The first planetary mechanism includes a first input body to which rotation of a crank is input, a first output body that rotates when the first input body rotates, and a first transmission body that transmits rotation of the first input body to the first output body. The first motor is capable of rotating at least one of the first input body, the first output body, and the crank. The speed reduction mechanism reduces rotation produced by the second motor in speed and transmits the rotation to the first transmission body.

A bicycle driving device allows control to be executed in accordance with the riding conditions. The bicycle driving device includes a planetary mechanism, a first motor, a second motor, and an output part. The planetary mechanism includes an input body to which rotation of a crankshaft is inputted, an output body that rotates when the input body rotates, and a transmission body that transmits rotation of the input body to the output body. The first motor is configured to rotate the input body or the output body. The second motor is configured to rotate the transmission body. The output part includes a hole through which the crankshaft extends. The output part is rotatable about the axis of the crankshaft, and rotation of the output body is transmitted to the output part.