Retrofit electric machine for bicycle and bicycle

A retrofit electric machine for a bicycle, comprising:

• a housing configured to be attached to a frame of a bicycle,
• a rotating electric machine attached to the housing;
• an annular rotating member mounted on the housing in a rotatable manner and connected to the rotating electric machine in a torque transmitting relationship;
• a torque transmitting member mounted on the rotating member and including a pair of parts configured to abut against either side of a crankarm for a pedal of the bicycle with respect to a rotational direction thereof;
• and
• a connecting member configured to connect the torque transmitting member with a rotationally central part of the crankarm such that the rotating member is concentric to a rotational center line of the crankarm,
• wherein the torque transmitting member includes
• a torque transmitting main body mounted on the rotating member via a bracket so as to be rotatable around an axial line orthogonal to the rotational center line of the crankarm and provided with a pair of opposing portions configured to oppose either outer surface of the crankarm with respect to the rotational direction,
• a clamp member threadably engaged by one of the opposing portions and configured to abut against one of the outer surfaces of the crankarm with respect to the rotational direction, and
• a tilt adjusting screw member threadably engaged by the torque transmitting main body and having a free end abutting against the rotating member,
• the connecting member being provided with a connecting screw member threadably engaged by the torque transmitting main body and connected to the rotationally central part of the crankarm.

A retrofit electric machine for a bicycle, comprising:

• a housing configured to be attached to a frame of a bicycle,
• a rotating electric machine attached to the housing;
• an annular rotating member mounted on the housing in a rotatable manner and connected to the rotating electric machine in a torque transmitting relationship;
• a torque transmitting member mounted on the rotating member and including a pair of parts configured to abut against either side of a crankarm for a pedal of the bicycle with respect to a rotational direction thereof;
• and
• a connecting member configured to connect the torque transmitting member with a rotationally central part of the crankarm such that the rotating member is concentric to a rotational center line of the crankarm,
• wherein the torque transmitting member includes
• a linear guide member fixed to the rotating member and extending in a tangential direction of the rotating member,
• a torque transmitting main body mounted on the rotating member via the linear guide member so as to be moveable in the tangential direction of the rotating member, and provided with a pair of opposing portions opposing either rotational side of the crankarm,
• the connecting member being provided with a fixing screw configured to secure the torque transmitting main body to the crankarm.