Wheel for pedal-assisted bikes

摘要

Wheel for pedal-assisted bikes includes:
a fixed structure associable with the frame of a bike having a driving pedal crank;
a circle element mounted on the structure for rotation around a main rotation axis;a propulsion disc rotatably mounted on the structure and connectable to the crank;an electric motor associated with the structure and for cooperating with the propulsion disc to motorize the circle element; andtransmission elements for transmitting rotary motion from the disc to the circle element which include a first detection device for detecting the force transmitted to the circle element from the disc, and including:a first plate associated in rotation with one of the disc and the circle element;a second plate associated with the other of the disc and the circle element;at least a motion transmission part between the first plate and second plate.

主权项

1. A wheel for pedal-assisted bikes, the wheel comprising:
at least a fixed structure associable with the frame of a bike having a driving pedal crank; at least a circle element mounted on said fixed structure in a rotatable manner around a main rotation axis; at least a propulsion disc mounted on said fixed structure in a rotatable manner and connectable to said driving pedal crank; motion transmission means for the transmission of the rotary motion from said propulsion disc to said circle element; and at least an electric motor associated with said fixed structure and configured to cooperate with said propulsion disc to motorize said circle element; wherein said motion transmission means comprises at least a first detection device configured to detect the force transmitted to said circle element from said propulsion disc, said first detection device comprising:
at least a first plate associated in rotation with one of the propulsion disc and the circle element,at least a second plate associated with the other of the propulsion disc and the circle element through a prismatic coupling of rib and recesses on the outer surface of the second plate and on the inner surface of a support device associated with the circle element, the prismatic coupling of ribs and recesses being configured to make the second plate rotatable around said main rotation axis and to slide along a sliding direction substantially parallel to said main rotation axis,at least a motion transmission part between said first plate and said second plate, the motion transmission part being associated with at least one of the first plate and the second plate, the motion transmission part being configured to engage a grip ramp, disposed at the other of the first plate and the second plate,the grip ramp being inclined with respect to a plane transversal to said main rotation axis,engagement of said grip ramp by said motion transmission part causing the sliding of said second plate along said sliding direction until the second plate is disposed in a position corresponding to the transmitted force, andat least a detection sensor configured to detect the position of said second plate along said sliding direction.