A lightweight, compact electric drive unit provides high reduction ratios for a bicycle, light electric vehicle or autonomous device. A cycloid gear reducer includes one or more cycloid gears within a housing. The cycloid gears interact with gear teeth on the inside surface of the housing, and ride on a cam shaft having eccentric lobes. Output pins extend through apertures in the cycloid gears, from an input carrier to an output carrier. An electric motor powers the cam shaft, while the output carrier powers a drive train.

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).

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).

Various personal mobility vehicles, such as scooters, are disclosed. The scooter can include at least one battery and motor for powering at least one driven wheel. The vehicle can include a gear assembly to convert a torque produced by the motor to a different torque to a driven shaft to power the at least one driven wheel. The battery can be removable.

A chainless bicycle for child includes a frame and a power gearing device. The frame has a seat tube between the front wheel and the rear wheel, with a passive gear axially disposed on a hub of the rear wheel. The power gearing device is disposed on the frame between the seat tube and the rear wheel. The power gearing device includes an active gear and a transmission gear meshed with the active gear. The transmission gear is meshed between the active gear and the passive gear. The power gearing device further includes a crank set disposed on two sides of the active gear for driving the active gear to rotate. Therefore, the passive gear is driven through the transmission gear to rotate in an identical direction with the active gear. Thus, the meshing structure of the present invention improves the safety of children.

A chainless bicycle for child includes a frame and a power gearing device. The frame has a seat tube between the front wheel and the rear wheel, with a passive gear axially disposed on a hub of the rear wheel. The power gearing device is disposed on the frame between the seat tube and the rear wheel. The power gearing device includes an active gear and a transmission gear meshed with the active gear. The transmission gear is meshed between the active gear and the passive gear. The power gearing device further includes a crank set disposed on two sides of the active gear for driving the active gear to rotate. Therefore, the passive gear is driven through the transmission gear to rotate in an identical direction with the active gear. Thus, the meshing structure of the present invention improves the safety of children.

A straddled vehicle, including a frame structure, a rear arm, a driving wheel rotatably supported by the rear arm, a power source unit, and a drive unit including a gear box, a drive motor and a control unit. The drive motor is arranged with an off-set toward a first direction from a center of the straddled vehicle, without overlapping the power source unit in a side view. The control unit is further in a second direction than the drive motor, and overlaps the drive motor, but does not overlap the power source unit, in the side view. The gear box is further in the second direction than the drive motor, and overlaps the drive motor in the side view. The gear box is also further in the first direction than the control unit, and overlaps with the control unit, but does not overlap the power source unit, in the side view.

A interior clutch-used control mechanism comprises a first control unit for controlling the fixedness of a sun gear; a second control unit for controlling engagements of inner gears at two sides and a planet frame; a third control unit for controlling the sun gear or the inner gears and the planet frame; and wherein power for control units are from rotary dynamic components, by displacements of driving rods for controlling operations of a cam or cam-like component; by using the cam or cam-like unit to function clutch or by using the cam or cam-like unit to drive a driven device to rotate or displace for operation of the clutch. By power rotating components of the internal clutch and cam or cam-like component, clutching components are controlled.

A dual powered propulsion system for use with a human powered vehicle is provided. The system includes a connecting rod with a front end operatively coupled to yoke-connected forearm bars. The system also includes a splitter coupled to a rear end of the connecting rod, wherein the splitter is coupled to a first rack and a second rack that operate with a first and second pinion gear to turn a crank axle. This system supplies rotational power to the crank axle in a single rotational direction as the connecting rod is oscillated up and down and back and forth. Even though a solid connecting rod is used to transfer power from the oscillating forearm bars to the crank axle, the vehicle is steerable to the right or left as a result of the use of a carriage, on rollers, and a turning track operatively connected to the forearm bars.

A transmission for a system, in which a directed force is introduced eccentrically with respect to a main shaft of the transmission, comprising the main shaft which is rotatably mounted in relation to a stationary housing by a main shaft bearing, a sun gear which is fixedly connected to the housing being arranged concentrically around the main shaft, and at least one control housing that rotates around the housing, wherein the first section thereof acts on the main shaft in a rotationally fixed manner and a planetary wheel is rotatably mounted by a first rotary bearing on the second section thereof, said planetary gear meshing with the sun gear. According to the invention, a force transmission means is fastened to the control housing and a drive crank rigidly engages the first end on the planetary wheel, wherein a second end of the drive crank is mounted in an articulated manner on a crank arm, said crank arm being supported in relation to the control housing by a movable coupling means. The aim of the invention was to provide a transmission having structural dimensions which are as compact as possible in the axial direction of the main shaft. Said aim is achieved in that the movable coupling means is a linear guide which absorbs tilting torques transmitted by the crank arm.