An electric drive for a bicycle includes an electric motor having a drive shaft, a driven shaft connected in a rotationally fixed manner to a driving gear for coupling to a wheel drive of the bicycle. The electric drive includes a transmission, which drivingly connects the drive shaft to the driven shaft. The transmission has a driven wheel, which is connected in a rotationally fixed manner to the driven shaft in a rotational drive direction, and at least two output gears, the at least two output gears including a first output gear and a second output gear, which in each case engage with the driven gear offset to one another in the circumferential direction in order to drive the driven wheel; and wherein the transmission has a power distribution, which divides a drive power of the electric motor to the output gears.

A powertrain for a pedal vehicle, such as a bicycle, which powertrain comprises a first and a second electric motor and a planetary gear set comprising a sun gear, a ring gear and a planet carrier, wherein the sun gear is connected to the first motor, the ring gear is connected to the crank axle receiving the user input, and the planet carrier is connected to an output of the powertrain for transmitting power to at least one output element, such as a wheel, of the vehicle, wherein the second motor is directly connected to the output of the powertrain.

A transmission for a bicycle includes an input shaft (1) which is rotationally fixable to a crankshaft (2), and an output shaft (3) which is rotationally fixable to an output gear. The transmission includes at least three planetary transmissions which are operatively connected to the input shaft and to the output shaft. A single one of the planetary transmissions includes a stepped planetary gear (4) with a first gear teeth section (5) having a first diameter and a second gear teeth section (6) having a second diameter.

A transmission for a bicycle includes an input shaft (1) which is rotationally fixable to a crankshaft (2), and an output shaft (3) which is rotationally fixable to an output gear. The transmission includes at least three planetary transmissions which are operatively connected to the input shaft and to the output shaft. A single one of the planetary transmissions includes a stepped planetary gear (4) with a first gear teeth section (5) having a first diameter and a second gear teeth section (6) having a second diameter.

An electric drive for a bicycle is disclosed. The drive includes an electric motor including an drive shaft, a driven shaft connected in a rotationally fixed manner to a driving gear for coupling to a wheel drive, and a transmission structured and arranged to drivingly connect the drive shaft to the driven shaft. The transmission includes a driven wheel, which is connected in a rotationally fixed manner to the driven shaft in a rotational drive direction, and at least two output gears. The at least two output gears includes a first output gear and a second output gear that each engage with the driven gear offset to one another in a circumferential direction to drive the driven wheel.

A transmission for a bicycle includes a transmission input shaft (1) which is rotationally fixable to a crankshaft (2) and also includes first, second and third planetary gear sets (PS1, PS2, PS3) which are operatively connected to one another. An element of the first planetary gear set (PS1) is rotationally fixed to the transmission input shaft (1). The first planetary gear set includes a planet gear encompassing a first planetary gear stage (3) and a second planetary gear stage (5). A first ring gear (6) is engaged with a gear teeth section of the first planetary gear stage (3) and is rotationally fixable to a transmission housing (4) with a first shift element (s1). A second ring gear (7) is engaged with a gear teeth section of the second planetary gear stage (5) and is rotationally fixable to the transmission housing (4) with a second shift element (S2).

A transmission for a bicycle includes a transmission input shaft (1) which is rotationally fixable to a crankshaft (2) and also includes first, second and third planetary gear sets (PS1, PS2, PS3) which are operatively connected to one another. An element of the first planetary gear set (PS1) is rotationally fixed to the transmission input shaft (1). The first planetary gear set includes a planet gear encompassing a first planetary gear stage (3) and a second planetary gear stage (5). A first ring gear (6) is engaged with a gear teeth section of the first planetary gear stage (3) and is rotationally fixable to a transmission housing (4) with a first shift element (s1). A second ring gear (7) is engaged with a gear teeth section of the second planetary gear stage (5) and is rotationally fixable to the transmission housing (4) with a second shift element (S2).

In a motor power transmission device (30), wherein rotational power of an electric motor (40) is input to a sun gear (51) of a planetary speed reducer (50), and then the rotation of the sun gear (51) is converted to rotation of a planetary carrier (55), and wherein the planetary carrier (55) rotatably supports planetary gears (61, 62) and converts revolving motion of the planetary gears (61, 62) into rotating motion, and the rotation of the planetary carrier (55) is then output to an output shaft (15), a torque limiter mechanism (57) is interposed between the planetary carrier (55) and the output shaft (15). Thus, even if excessive back torque is input to the output shaft, transmission of the back torque to the speed reducer is blocked to protect the speed reducer.

A load cell for determining a radial force acting on a crankshaft having a receiving sleeve for receiving a bearing ring and a fastening ring for attaching the load cell in a transmission housing. Axial support areas are provided on the fastening ring for axially supporting the outer ring of the first bearing. Moreover, measuring regions for receiving radial forces of the receiving sleeve are provided which connect the receiving sleeve with the fastening ring. Strain sensors are attached to at least two of the measuring regions.

A drive arrangement for a bicycle or pedelec includes a manual drive shaft (1) in a housing (2). A rotor (3) of a first electric drive (EM 1) is arranged axially parallel to the manual drive shaft (1), and a rotor (4) of a second electric drive (EM2) is arranged coaxially to the manual drive shaft (1). The rotor (3) of the first electric drive (EM 1) is coupled to a first planetary gear set (PS 1) as a superposition gearbox via a first fixed ratio. The rotor (4) of the second electric drive (EM 2) is coupled to the manual drive shaft (1) via a second fixed ratio. The manual drive shaft (1) is coupled to the first planetary gear set (PS 1) as the superposition gearbox, and the first planetary gear set (PS 1), as the superposition gearbox, is coupled to an output (5).