Patent ID: 7784377

Claim:
An accelerator pedal system, comprising: a pedal control unit that receives a vehicle speed signal and a signal from a switch, compares the two signals, and, if the vehicle speed exceeds a preselected speed, outputs a control signal to control a reaction force of an accelerator pedal on the basis of the preselected speed and a selected mode; and a reaction device that receives the control signal and controls the accelerator pedal according to the selected mode, the reaction device comprising: an actuator for generating power on the basis of the control signal; a power delivery unit for selectively transmitting the power generated by the actuator; and a wheel for receiving the power from the power delivery unit and transmitting the power to the accelerator pedal, wherein the power delivery unit comprises: a first gear for receiving the power from the actuator; a second gear for receiving the power from the first gear; and a third gear for rotating the wheel as much as a predetermined angle by receiving the power from the second gear, and wherein each of the first and second gears comprises a spur gear and the third gear comprises a worm gear.