Patent ID: 9689478
Date: 2017-06-27
CPC Classifications: B60T,F16H,G05G

Claim:
1. A brake pedal apparatus with a variable pedal ratio comprising: a pedal shaft rotatably disposed in a pedal plate; a brake pedal coupled to the pedal shaft and configured to rotate the pedal shaft while rotationally moving about the pedal shaft during a drivers operation of the brake; a slider coupled to the pedal shaft so as to be axially movable relative to the pedal shaft while being capable of rotating together with the pedal shaft; a drive unit configured to axially move the slider in accordance with a driver's actuation; an adjusting rod fixed to the slider and is obliquely disposed so that a distance between the adjusting rod and the pedal shaft increases in an axial direction of the pedal shaft; and a transmission shaft coupled to the adjusting rod so as to be movable relative to the adjusting rod in an axial direction of the adjusting rod and coupled to a dual brake valve at an end portion of the transmission shaft to operate the dual brake valve during vertical movement of the transmission shaft depending on the driver's operation of the brake, wherein a pedal ratio is adjusted while the adjusting rod moves together with the slider, during axial movement of the slider while the transmission shaft is coupled to the dual brake valve.