Pedaling force sensing mechanism of electric bicycle

The utility model discloses a pedaling force sensing mechanism of an electric bicycle. The pedaling force sensing mechanism comprises a crank shaft, a shaft sleeve, one or more sensing units and a control unit, the crankshaft is sleeved with the shaft sleeve, and one-way transmission is conducted between the shaft sleeve and the crankshaft through an isolator. The sensing units are arranged on theshaft sleeve at equal intervals; wherein the sensing unit is used for sensing the torque of the shaft sleeve and correspondingly generating a plurality of sensing signals respectively, and the control unit is electrically connected with the sensing unit and used for receiving the sensing signals of the sensing unit and calculating the average value of the torque corresponding to the sensing signals, so that the control unit controls the motor to output corresponding assisting power according to the average value. Therefore, according to the utility model, the mounting position of the sensingunit is not limited by ado