Patent ID: 7913824

Claim:
A disk brake device comprising: three cylinders in parallel on a caliper of a disk brake, the cylinders provided with pistons pressing a brake pad onto a disk plate; a first air discharge and a first brake hose connected to a center cylinder; and a second air discharge and a second brake hose connected to side cylinders on both sides, wherein a first hose connection mouth connecting the first brake hose, and a first air discharge mouth connecting the first air discharge projecting from an outer face of the caliper are in close proximity so that an axis of the first hose connection mouth and an axis of the first air discharge mouth are arranged in parallel; and a difference in elevation is provided on both tip end faces so that the tip end face of the first air discharge mouth is higher than the tip end face of the first hose connection mouth, wherein an air valve is threadably engaged with the first air discharge mouth which closes when tightened and opens when loosened; and a tool engagement section is in a higher position than the tip end face of the first air discharge mouth.