Abstract: The present application discloses a pressure switch which includes a tube structure, a pressure transmitting assembly, a microswitch, and corrugated sheets. The pressure transmitting assembly disposed inside the tube structure includes a guide rod with a piston, and a fluid chamber providing working pressure is defined between the piston and a fluid inlet. The microswitch is disposed at another end of the tube structure away from the fluid inlet and can be actuated by the guide rod. The corrugated sheets are fixed inside the tube structure and stacked on the piston structure so as to form a sealing and pressure transmitting interface for the pressure switch. Therefore, the pressure switch has good sealing property, good buffering capacity, and enhanced mechanical response rate with the corrugated sheets and is suitable for precision pressure measurement and control in an environment with high pressure and high frequency vibration.

Abstract: The present application discloses a pressure switch which includes a tube structure, a pressure transmitting assembly, a microswitch, and corrugated sheets. The pressure transmitting assembly disposed inside the tube structure includes a guide rod with a piston, and a fluid chamber providing working pressure is defined between the piston and a fluid inlet. The microswitch is disposed at another end of the tube structure away from the fluid inlet and can be actuated by the guide rod. The corrugated sheets are fixed inside the tube structure and stacked on the piston structure so as to form a sealing and pressure transmitting interface for the pressure switch. Therefore, the pressure switch has good sealing property, good buffering capacity, and enhanced mechanical response rate with the corrugated sheets and is suitable for precision pressure measurement and control in an environment with high pressure and high frequency vibration.

Abstract: A pedal force sensing apparatus includes a pedal force input shaft, a force action sleeve, a torque output shaft, at least one elastomer, a micro optical pickup head module, a diversion sleeve, a linear sliding bush and a displacement sensor. The pedal force input shaft to which an input torque is applied drives the force action sleeve combined with it to simultaneously rotate. Sequentially, the force action sleeve applies forces to the elastomer to have reaction force acting on the torque output shaft. When a reverse torque from the loading of the electric bicycle is applied to the opposite end of the torque output shaft, the rotations of the torque output shaft and the force action sleeve occur, and relative angular displacement between them simultaneously exists.

Abstract: A pedal force sensing apparatus includes a pedal force input shaft, a force action sleeve, a torque output shaft, at least one elastomer, a micro optical pickup head module, a diversion sleeve, a linear sliding bush and a displacement sensor. The pedal force input shaft to which an input torque is applied drives the force action sleeve combined with it to simultaneously rotate. Sequentially, the force action sleeve applies forces to the elastomer to have reaction force acting on the torque output shaft. When a reverse torque from the loading of the electric bicycle is applied to the opposite end of the torque output shaft, the rotations of the torque output shaft and the force action sleeve occur, and relative angular displacement between them simultaneously exists.