Abstract: A pedelec bottom bracket drive unit includes a rigid drive housing and a tolerance compensation sheet-metal spring which is arranged to stand substantially in a vertical plane. The tolerance compensation sheet-metal spring includes at least one fixing point at a housing side and at least one mounting point for fastening the tolerance-compensating sheet-metal spring to a pedelec-frame-side drive mount. The at least one fixing point has a fixing point traverse axis. The tolerance compensation sheet-metal spring is fixed to the rigid drive housing at the at least one fixing point at the housing side. The at least one mounting point has a mounting point traverse axis. The at least one mounting point is arranged offset with respect to a next adjacent fixing point of the at least one fixing point as viewed from the fixing point traverse axis and from the mounting point traverse axis.

Abstract: A gasoline engine boosting system including a fuel tank, an engine, a fuel tube, an accelerator line, a drive sprocket, a drive chain, a discharge pipe and a fixing bracket. The fixing bracket includes an adjustable engine fixing bracket. The adjustable engine fixing bracket includes a first front fixing rod, a second front fixing rod, a first rear fixing rod, a second rear fixing rod, a front fixing base, a rear fixing base, a first tube clip and a second tube clip, the front fixing base and the rear fixing base are respectively fixed on a front side and a rear side of the engine. The front fixing base includes a front sliding adjustment groove. The rear fixing base includes a rear sliding adjustment groove allow. The gasoline engine boosting system is adaptable to a bicycle frame.

Abstract: A motorized bicycle includes: a frame; a plurality of wheels coupled to the frame; pedals coupled to the frame for driving at least one of the wheels; a motor coupled to the pedals and at least one of the wheels; a battery for supplying power to the motor; and a controller. When the controller determines that the motorized bicycle is traveling on a flat terrain or a decline, it enters or maintains a regeneration mode, where electric power is generated when a rider of the motorized bicycle pedals, and the electric power is used to charge the battery. When the controller determines that the motorized bicycle is traveling on an incline, it enters or maintains an assistance mode, where any regeneration of the battery is stopped, and power output from the motor is used to assist the rider in propelling the motorized bicycle forward.

Abstract: The present invention discloses a motorized driving device for mounting on a frame of a bicycle. The bicycle includes a pedal drive mechanism coupled to a chain for transferring a drive force to at least one chainwheel. The drive device includes a power source of rotary power and a power transmission mechanism for coupling between the pedal drive mechanism and the chain. The power transmission mechanism further includes a first unidirectional power transmission module and a second unidirectional power transmission module, such that an auxiliary power transmitted by the power transmission mechanism from the power source to the chain is independent from an pedal power transmitted by the power transmission mechanism from the pedal drive mechanism to the chain. A method of installing a motorized driving device on a standard bicycle is also disclosed.

Abstract: A center motor power-assisted bicycle includes an internal transmission and has a regenerative function. A transmission comprises, in a drive wheel hub, a planetary gear, a one-way clutch for reverse input, a clutch switching device, and, a sun gear and transmits driving force from a sprocket to the drive wheel. A transmission control mechanism selectively rotationally fixes the sun gear to the axle to change speed when driving force is applied. The clutch is disposed between the sun gear and the axle, and selectively rotationally fixes the sun gear to the axle by the operation of the clutch switching device when reverse input is applied. While the bicycle is driven, the clutch switching device moves the clutch to the rotatable state, to transmit driving force. While the bicycle is traveling without being driven, the clutch is locked, so that reverse input is transmitted to the sprocket.

Abstract: A pedaling assistance device for a light vehicle, in particular a bicycle, equipped with pedals and a ratio-changing transmission, this device comprising a heat engine equipped with a reducing gear mechanically coupled with an element receiving muscular pedaling power from a user of the light vehicle, the mechanical coupling being effected upstream of said ratio-changing transmission so that the heat engine benefits from said changes of ratio, wherein the assistance device comprises a torque limiter, placed on the kinematics of the reducing gear of the heat engine between said heat engine and the mechanical coupling.

Abstract: A pedaling assistance device for a light vehicle, in particular a bicycle, equipped with pedals and a ratio-changing transmission, this device comprising a heat engine (1; 101; 201) equipped with a reducing gear mechanically coupled with an element (26, 46; 146; 227) receiving muscular pedaling power from a user of the light vehicle, the mechanical coupling being effected upstream of said ratio-changing transmission in such a way that the heat engine benefits from said changes of ratios, characterized in that the reducing gear of the heat engine includes a first belt-based reduction stage (6; 286).

Abstract: A bicycle with an auxiliary power unit with improved positional stability of a torque sensor and inhibits the position of the sensor from being misaligned. A power-assisted bicycle includes an annular hollow member inserted over an outer periphery of a crankshaft and a one-way clutch, disposed on the hollow member, for transmitting, when a pedaling torque in a direction in which the power-assisted bicycle travels in a forward direction is applied to the crankshaft, the pedaling torque to a rear wheel. In the power-assisted bicycle, a magnetic film is formed in a recess disposed in an outer periphery of the hollow member; and a magnetostrictive torque sensor is positioned and fixed by a support member for supporting the magnetostrictive torque sensor rotatably relative to the annular hollow member at both ends of the recess such that the magnetostrictive torque sensor faces the magnetic film in the recess.