A human-powered vehicle control device includes an electronic controller that controls a motor assisting in propulsion of a human-powered vehicle including a crank. The controller changes an assist force ratio generated by the motor to human drive force input to the crank accordingly to the human drive force and a crank rotational speed. The controller increases the ratio as the human drive force increases while the crank rotational speed is constant and the human drive force is in a first range. The controller controls the motor so that the ratio is larger for a case where the human drive force is a first predetermined value in a first range and the crank rotational speed is in a second range than for a case where the human drive force is the first predetermined value and the crank rotational speed is in a third range higher than the second range.

A drive device includes a motor, an output part outputting torque to the outside, a gear part transmitting torque of the motor to the output part, and a housing having an internal space. The gear part includes at least one gear shaft extending in an axial direction, to which at least one gear is fixed, and a gear case accommodating the gear. The gear case includes a wall part facing an outer circumferential surface of the accommodated gear in a radial direction and extending in a circumferential direction and an opening adjacent to the wall part in the circumferential direction and penetrating in the radial direction. The opening faces the housing in the radial direction, and in a rotation direction of the gear, the wall part includes a front end disposed on a front side of the opening and adjacent to the opening. The front end contacts the housing.

A drive device includes a motor, an output part outputting torque to the outside, a gear part transmitting torque of the motor to the output part, and a housing having an internal space. The gear part includes at least one gear shaft extending in an axial direction, to which at least one gear is fixed, and a gear case accommodating the gear. The gear case includes a wall part facing an outer circumferential surface of the accommodated gear in a radial direction and extending in a circumferential direction and an opening adjacent to the wall part in the circumferential direction and penetrating in the radial direction. The opening faces the housing in the radial direction, and in a rotation direction of the gear, the wall part includes a front end disposed on a front side of the opening and adjacent to the opening. The front end contacts the housing.

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.

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.

The present invention relates to a portable motor assembly comprising a case, a control module disposed in the case, a motor wrapped up with a friction wheel for connecting to the case and controlled by the control module for rotation, a fixing base connecting to a bottom of the case and having a clamp for fixing to a seat tube of a bicycle and at least one tension spring for pulling down the fixing base and making the friction wheel surrounding the motor tightly press against a surface of a rear wheel of the bicycle to drive a rear wheel of the bicycle.

The present invention relates to a portable motor assembly comprising a case, a control module disposed in the case, a motor wrapped up with a friction wheel for connecting to the case and controlled by the control module for rotation, a fixing base connecting to a bottom of the case and having a clamp for fixing to a seat tube of a bicycle and at least one tension spring for pulling down the fixing base and making the friction wheel surrounding the motor tightly press against a surface of a rear wheel of the bicycle to drive a rear wheel of the bicycle.

The herein invention presents new technologies for superior performance in bicycles, other human powered vehicles, and other mechanical systems; based on Wide Range Linear to Exponential CVT technology, Energy Saving Geometries, Short Stroke Independent Pedaling, and Reduced Friction Ball Bearings. Said new technologies are superior to prior art technologies in that they enable greater efficiency in the application of power and markedly reduce energy consumption, resulting in higher top speeds as well as much greater hill climbing power.

The herein invention presents new technologies for superior performance in bicycles, other human powered vehicles, and other mechanical systems; based on Wide Range Linear to Exponential CVT technology, Energy Saving Geometries, Short Stroke Independent Pedaling, and Reduced Friction Ball Bearings. Said new technologies are superior to prior art technologies in that they enable greater efficiency in the application of power and markedly reduce energy consumption, resulting in higher top speeds as well as much greater hill climbing power.

The present invention relates to an electric kickboard in which an impact absorbing device is installed, and more particularly, to an electric kickboard including an impact absorbing device to support a weight of a user standing up by allowing the impact absorbing device to sufficiently absorb an impact when a seat is vibrated during riding by using elasticity of springs having different spring constants and including a self-power generating drive at one side thereof to produce electricity using vertical vibrations during riding and accumulate the produced electricity, thereby improving an energy efficiency.