A direct-drive bicycle include a bicycle body, which extends to include a front fork. A front wheel is pivotally provided at a tube fixedly provided at the terminal end of the front fork. A shaft passes through the tube. A rotary disc is connected to the shaft. A pedal is provided at each end of the shaft through a connecting rod. A transmission assembly include a rotatable spline shaft provided, a friction wheel slidably provided at the spline shaft to press against a friction disc provided at a side of the front wheel, and a rotating wheel fixed to the spline shaft. The rotary disc is located between the spline shaft and the front wheel, and drives the rotating wheel to change the position where the friction wheel presses against the friction disc. Thus, the front wheel can be directly driven and provides continuously variable transmission.

A direct-drive bicycle include a bicycle body, which extends to include a front fork. A front wheel is pivotally provided at a tube fixedly provided at the terminal end of the front fork. A shaft passes through the tube. A rotary disc is connected to the shaft. A pedal is provided at each end of the shaft through a connecting rod. A transmission assembly include a rotatable spline shaft provided, a friction wheel slidably provided at the spline shaft to press against a friction disc provided at a side of the front wheel, and a rotating wheel fixed to the spline shaft. The rotary disc is located between the spline shaft and the front wheel, and drives the rotating wheel to change the position where the friction wheel presses against the friction disc. Thus, the front wheel can be directly driven and provides continuously variable transmission.

The present invention relates to an electric drive system for a bike comprising a portable electric friction drive device and a bike bracket. A first drive device attachment point is located at a rear part of the friction drive device. A second drive device attachment point is located between the front part of the friction drive device and the rear part of the friction drive device. An inclination control arrangement is configured to control the inclination of the imaginary line between the second drive device attachment point and a contact point of the drive wheel by adjusting the tilt of the friction drive device over the second drive device attachment point. The bike has at least one wheel, comprising the electric drive system, wherein the drive wheel is arranged to be contactable to the tire of said wheel at said contact point.

The present invention relates to an electric drive system for a bike comprising a portable electric friction drive device and a bike bracket. A first drive device attachment point is located at a rear part of the friction drive device. A second drive device attachment point is located between the front part of the friction drive device and the rear part of the friction drive device. An inclination control arrangement is configured to control the inclination of the imaginary line between the second drive device attachment point and a contact point of the drive wheel by adjusting the tilt of the friction drive device over the second drive device attachment point. The bike has at least one wheel, comprising the electric drive system, wherein the drive wheel is arranged to be contactable to the tire of said wheel at said contact point.

A motorcycle loader 100 for moving a motorcycle 10 without turning the motorcycle 10 on, and in particular, moving the motorcycle 10 to an elevated surface by attaching a friction wheel 102 to one of the tires 16 of the motorcycle 10 using a frame 110 that attaches to the motorcycle 10, and uses a motor 103 operatively connected to the friction wheel 102 to power the friction wheel 102, which causes the motorcycle wheel 16 to turn, thereby mobilizing the motorcycle 10. A controller 104 connected to the motor 103 of the motorcycle loader 100 can control the power, direction, and speed of the motor 103. The controller 104 can be connected to the battery of the motorcycle 10 to power the friction wheel 102. A clamp 160 operatively connected to the friction wheel 102 can be used to engage or disengage the friction wheel 102 from the tire 16 of the motorcycle 10.

The present invention relates to an upright single-wheeled electromotive apparatus, the upright single-wheeled electromotive apparatus according to an embodiment of the present invention comprising: a handle part having a speed-controlling means on one side; an upper frame connected to the handle part and extending lengthwise, and accommodating a battery therein; a brake connected to the upper frame; a drive unit connected to the brake, and rotates a roller; a pair of lower frames for supporting the upper frame while fixing the brake and drive unit on the inner side thereof; a wheel, positioned between the pair of lower frames, which, when the upper frame moves in one direction with respect to a reference position, stops rotating due to the brake coming into contact with the outer surface of the wheel, and when the upper frame moves in the other direction with respect to the reference position, rotates due to the roller of the drive unit coming into contact with the outer surface of the wheel; and a control unit for varying the rotational speed of the drive unit by means of the speed-controlling means.

A direct-drive bicycle include a bicycle body, which extends to include a front fork. A front wheel is pivotally provided at a tube fixedly provided at the terminal end of the front fork. A shaft passes through the tube. A rotary disc is connected to the shaft. A pedal is provided at each end of the shaft through a connecting rod. A transmission assembly include a rotatable spline shaft provided, a friction wheel slidably provided at the spline shaft to press against a friction disc provided at a side of the front wheel, and a rotating wheel fixed to the spline shaft. The rotary disc is located between the spline shaft and the front wheel, and drives the rotating wheel to change the position where the friction wheel presses against the friction disc. Thus, the front wheel can be directly driven and provides continuously variable transmission.

A direct-drive bicycle include a bicycle body, which extends to include a front fork. A front wheel is pivotally provided at a tube fixedly provided at the terminal end of the front fork. A shaft passes through the tube. A rotary disc is connected to the shaft. A pedal is provided at each end of the shaft through a connecting rod. A transmission assembly include a rotatable spline shaft provided, a friction wheel slidably provided at the spline shaft to press against a friction disc provided at a side of the front wheel, and a rotating wheel fixed to the spline shaft. The rotary disc is located between the spline shaft and the front wheel, and drives the rotating wheel to change the position where the friction wheel presses against the friction disc. Thus, the front wheel can be directly driven and provides continuously variable transmission.

To provide a frictional drive unit that can arrange drive rollers with high density and facilitate an attachment operation of the drive rollers, a frictional drive unit 2 includes a pair of drive disks 4, a plurality of drive rollers 5 rotatably supported by an outer circumferential portion of each drive disk, a pair of actuators 8 configured to independently rotate the pair of drive disks, and an annular main wheel 7 arranged between the pair of drive disks and coming into contact with the drive rollers. Each drive roller includes a roller shaft 41 and a round roller body 42 provided on an intermediate portion of the roller shaft. Each drive disk includes plural pairs of bearing grooves 45 each receiving both ends of the roller shaft of each drive roller. Each bearing grooves open toward the main wheel.

A multimodal transportation system includes a module alternately coupleable with a vehicle and a mobility device. The module includes a casing and a motor, a battery, and a controller each supported by the casing. The vehicle and the module each include electrical contacts engageable with each other. The mobility device includes a frame, and the casing and the frame each include a locking element releasably engageable with each other.