US Patent 7424836 Anteroposterior position variable pedal apparatus

A push link shaft 4 serving as a center of swing of push links 2a and 2b adapted to directly output a force of operating a brake master cylinder 22 is provided in a pedal apparatus, in addition to a pedal link shaft 5 serving as a center of swing of a pedal arm 7, and pedal links 3 and 3. An application point shaft 10, on which an external force received by the push link 20 and 2b is competitive with a force of stepping on a pedal 11, is adapted to move in an up-down direction when a slider 8, to which the pedal arm 7 is fixed, is moved along a slider rail 9.