Patent ID: 11970243
Assignee: HONDA MOTOR CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 0:
1. A bicycle exercise measurement device, comprising:
a housing configured to be supported by a frame of a bicycle;
a generator attached to the housing;
an annular rotational input member for rotationally driving the generator, the rotational input member being rotatably mounted on the housing and positioned around a crank axis line which is a rotational center line of a crankshaft and a crank arm for a pedal of the bicycle;
a connecting member connecting the rotational input member to the crankshaft or the crank arm in a torque transmitting relationship;
a sensor for detecting at least one of electric current of the generator, a rotational speed of the generator or the crank arm, a torque of the crank arm, a position of the crank arm, a strain in the crank arm, and a pressure on the pedal;
a measurement computing unit for computing at least one of power and a pedaling force from an output of the sensor; and
a display unit for displaying a computed value of the measurement computing unit,
wherein the housing includes an annular part that concentrically supports the rotational input member, and the rotational input member and the annular part are positioned between the frame and the crank arm, and
the annular part is provided with a tubular portion defining a central opening through which the crankshaft loosely passes, and the rotational input member is coaxially and rotatably mounted on an outer periphery of the tubular portion, the tubular portion being formed integrally with the annular part of the housing.