A pawls-type one-way clutch selectably connects and disconnects an electric motor and drive system with the front sprocket of a bicycle. Laterally-extending pivotable pawls on a first rotatable member engage cam surfaces on a frictionally rotatable plate and cause the pawls to either engage with or disengage from corresponding teeth in a ratchet wheel attached to a second rotatable member. Sensors and a controller determine whether a rider is pedaling the bicycle and applying rotational power in the first rotational direction, and if so, the motor applies power in the forward rotational direction, causing the clutch to engage and power to be transmitted to the front sprocket. Otherwise, the motor applies power in the rearward rotational direction, causing the clutch to disengage the front sprocket from the electric motor, which allows the bicycle to be rolled backwards freely without attempting to back-drive the electric motor and drive system in reverse.

A pawls-type one-way clutch selectably connects and disconnects an electric motor and drive system with the front sprocket of a bicycle. Laterally-extending pivotable pawls on a first rotatable member engage cam surfaces on a frictionally rotatable plate and cause the pawls to either engage with or disengage from corresponding teeth in a ratchet wheel attached to a second rotatable member. Sensors and a controller determine whether a rider is pedaling the bicycle and applying rotational power in the first rotational direction, and if so, the motor applies power in the forward rotational direction, causing the clutch to engage and power to be transmitted to the front sprocket. Otherwise, the motor applies power in the rearward rotational direction, causing the clutch to disengage the front sprocket from the electric motor, which allows the bicycle to be rolled backwards freely without attempting to back-drive the electric motor and drive system in reverse.

A bicycle includes a frame, a storage compartment, a battery pack, a pedal assist unit, and a lighting system. The frame includes a head tube, a stem, a down tube, a central hub, and a pair of chain stays. The central hub defines an internal cavity. The down tube and the central hub cooperatively define a battery opening connected to the internal cavity. The storage compartment includes a door positioned to selectively enclose an opening in the down tube. The battery pack is releasably received by the battery opening. The pedal assist unit is disposed within the internal cavity. The lighting system includes one or more taillights integrated into the chain stays, a conspicuity lamp integrated into the head tube, and/or a headlight integrated into to at least one of the stem or the head tube.

A bicycle includes a frame, a storage compartment, a battery pack, a pedal assist unit, and a lighting system. The frame includes a head tube, a stem, a down tube, a central hub, and a pair of chain stays. The central hub defines an internal cavity. The down tube and the central hub cooperatively define a battery opening connected to the internal cavity. The storage compartment includes a door positioned to selectively enclose an opening in the down tube. The battery pack is releasably received by the battery opening. The pedal assist unit is disposed within the internal cavity. The lighting system includes one or more taillights integrated into the chain stays, a conspicuity lamp integrated into the head tube, and/or a headlight integrated into to at least one of the stem or the head tube.

A bicycle component includes a hub shell for a wheel of an at least partially muscle-powered bicycle, wherein the hub shell is rotatably supported by at least one bearing device. An adapter unit is disposed on one end of the hub shell. The adapter unit includes an inner stopper having an inner stop face for transferring a clamping force to the bearing device and an outer stopper with an outer stop face transmitting at least part of the clamping force. The adapter unit includes a first and a second stopper component transmitting the clamping force.

An e-bike includes a frame assembly, wheels supporting the frame assembly, a motor assembly coupled to the frame assembly, and a battery coupled to the frame assembly. The battery includes a battery housing and a battery mount. The e-bike further includes a fastener coupling the frame assembly to the battery mount, and a resilient pad adjacent the battery mount, the resilient pad being compressed between the frame assembly and the battery housing.

An electric bicycle includes a frame assembly, wheels supporting the frame assembly, a motor assembly coupled to the frame assembly and having a motor output shaft, and a chainring assembly including a mounting portion clamped onto the motor output shaft.

A bicycle component that can be reduced in size in a direction orthogonal to a crankshaft includes a housing and a first mounting portion. The housing includes a support that supports a crankshaft of a bicycle. The first mounting portion is provided on the housing independently from the support to mount the housing on a frame of the bicycle. The first mounting portion includes a through hole through which the crankshaft extends.

A bicycle component that can be reduced in size in a direction orthogonal to a crankshaft includes a housing and a first mounting portion. The housing includes a support that supports a crankshaft of a bicycle. The first mounting portion is provided on the housing independently from the support to mount the housing on a frame of the bicycle. The first mounting portion includes a through hole through which the crankshaft extends.

A unitary system for an electric-assist bicycle generates signals indicative of power input to a drive system of the bicycle when a rider pedals the bicycle, considering torque applied by the rider, as well as the cadence or speed of the rider's pedaling. Direction of pedaling is also measured using the system. The system utilizes fixed, hard-wired, contactless electronics, namely first and second inductance coils that are non-equally-spaced circumferentially around a first axis, and which generate a first electrical signal indicative of torque based on lateral movement of a conductive or otherwise magnetically permeable rotatable member relative to the coils, and which generate second and third electrical signals indicative of pedaling cadence and direction based on eccentric relative rotational movement of the conductive or otherwise magnetically permeable rotatable member relative to the first and second inductance coils.