BRAKE DEVICE

A brake device includes a brake pedal, an input rod, a master cylinder, a guide rail, a slider, and a coupling arm. The brake pedal is rotatable using an arm rotary shaft disposed on one end of a pedal arm used as a fulcrum. A pedal force input to the brake pedal is transmitted to the input rod as a thrust. The master cylinder is configured to generate a brake hydraulic pressure responsive to the thrust input to the input rod. The guide rail is disposed on the pedal arm and extends along a longitudinal direction of the pedal arm. The slider is coupled to the pedal arm via the guide rail and is movable on the guide rail. The coupling arm has a first end rotatably coupled to the slider and a second end rotatably coupled to the input rod. The second end is different from the first end.