Patent ID: 8689629

Claim:
An sensing unit for a bicycle speedometer, the bicycle speedometer having a meter body for displaying information and the sensing unit for detecting pedaling and generating a signal related to bicycle pedaling as a source of the information, and the sensing unit comprising: a sensor being installed onto a bicycle frame; and a fixture for carrying a sensed member, wherein the fixture has a fixing end coupled with a bicycle crank and an opposite end extended with a coupling arm in parallel with the bicycle crank, in which the fixing end is coupled with one end of the bicycle crank through a screw, and the coupling arm carries the sensed member that is to be sensed by the sensor, wherein by rotating the fixture against the bicycle crank with the screw as the axle center of rotation, a trajectory of the sensed member moving with the rotating bicycle crank is adjustable, so that the sensed member is allowed to be aligned with the sensor for the sensor to properly sense the sensed member and generate the signal related to bicycle pedaling for the meter body to display.