Power steering apparatus in vehicle having handlebar and vehicle having handlebar

A power steering apparatus in a vehicle having a handlebar, comprising:

• a steering shaft portion having an input shaft and an output shaft, each being rotatably supported;
• a torque sensor portion connected so as to join the input shaft and the output shaft, the torque sensor portion sensing an amount of torque;
• and
• a power assist portion engaged with the output shaft, the power assist portion assisting in a steering effort based on the amount of torque sensed by the torque sensor portion and the like;
• wherein the power steering apparatus further includes a sub-steering portion engaged so as to connect the input shaft with the output shaft while circumventing the torque sensor portion, the sub-steering portion reducing the amount of torque.

A power steering apparatus in a vehicle having a handlebar, comprising:

• a steering shaft portion having an input shaft and an output shaft, each being rotatably supported;
• a torque sensor portion disposed between the input shaft and the output shaft, the torque sensor portion including a sensing input shaft and a sensing output shaft for sensing an amount of torque;
• and
• a power assist portion engaged with the output shaft, the power assist portion assisting in a steering effort based on the amount of torque sensed by the torque sensor portion;
• wherein the power steering apparatus further includes a torque reduction mechanism portion engaged with input shaft and the sensing input shaft, the torque reduction mechanism portion reducing torque applied to the input shaft and applying the resultant reduced torque to the sensing shaft.