초록 ▼

A bicycle power meter having components which replace the rear axle hub assembly of a conventional chain driven bicycle. Inner and outer hubs are coupled to the usual freewheel chain drive cluster and to the rear wheel, respectively. The hubs are interconnected by a plurality of torsion rods which t

A bicycle power meter having components which replace the rear axle hub assembly of a conventional chain driven bicycle. Inner and outer hubs are coupled to the usual freewheel chain drive cluster and to the rear wheel, respectively. The hubs are interconnected by a plurality of torsion rods which transmit driving torque form the inner hub to the outer hub. The torsional deflection of the rods is evidenced by a change in the relative angular displacement between a pair of hub disks attached to the hubs, respectively. The rate of rotation of the outer hub disk reflects wheel speed. A sensor head converts the relative angular displacement between the disks, and the rate of rotation of the outer hub disk, into signals which are applied to a processing and display module that calculates and displays horsepower.

대표청구항 ▼

A bicycle power meter comprising: an axle having an axis and adapted to be fixed to a bicycle frame; a first hub carried by the axle for rotation about the axis; a second hub carried by the first hub and adapted to mount a bicycle wheel; torsion means connected between the first and second hubs and

A bicycle power meter comprising: an axle having an axis and adapted to be fixed to a bicycle frame; a first hub carried by the axle for rotation about the axis; a second hub carried by the first hub and adapted to mount a bicycle wheel; torsion means connected between the first and second hubs and twistable in proportion to the applied torque; drive means coupled to the first hub for applying a driving torque to the first hub to thereby impart a change in the angular position of the first hub relative to the second hub; sensor means for detecting the change, and also for detecting the rate of rotation of the second hub; and means coupled to the sensor means for calculating the power output of the bicycle rider as a function of the change in the angular position and the rate of rotation.