Patent ID: 8807297

Claim:
A mechanical disk brake caliper assembly for operative engagement with a disk brake rotor, the mechanical disk brake caliper assembly comprising: a caliper body defining a disk brake rotor slot for receiving a part of said disk brake rotor; a push member mounted in said caliper body and rotatable about an axis, said push member comprising a push portion and a mating connection portion; a crank arm comprising a connection portion connected to said mating connection portion of said push member and a driven portion connected to a brake cable; a first brake pad movably mounted in said disk brake rotor slot of said caliper body at one side relative to said disk brake rotor; a second brake pad movably mounted in said disk brake rotor slot of said caliper body at an opposite side relative to said disk brake rotor; a lever arm pivotally mounted in said caliper body, said lever arm comprising a driven arm portion abutted against said push portion of said push member and a bearing arm portion abutted against said second brake pad; and a horizontal displacement means for moving at least a part of said push member horizontally along said axis between a first position and a second position when said push member is rotated by an external force; wherein when said push member is moved horizontally from said first position toward said second position, the push portion of said push member pushes said first brake pad and said driven arm portion of said lever arm, causing said bearing arm portion of said lever arm to push said second brake pad in direction toward said first brake pad so that said first brake pad and said second brake pad are synchronously forced into operative engagement with said disk brake rotor.