Patent ID: 8651244

Claim:
A hydraulic brake device comprising: a carrier body, the carrier body being integrally molded and being in reversed U-shape, each of two sides of the carrier body having an assembling portion disposed thereon for assembling purpose and having a connecting portion extending from the assembling portion; and a hydraulic brake assembly movably mounted on the connecting portion of each of two sides of the carrier body; the hydraulic brake assembly comprising: a housing having a chamber defined therein for receiving brake oil, the housing having two through holes defined therein; an elastomer sealingly received in the chamber, the elastomer having a U-shaped portion formed therein and a movable portion disposed in a center thereof and connected to the U-shaped portion; a holder connected to the elastomer, the holder having a dovetail groove defined therein for detachably receiving a brake shoe; and a sealing plate received in the chamber, the sealing plate having a shoulder extended therefrom, the elastomer having a flange extended therefrom, wherein the shoulder abuts against the flange to provide a sealing effort, the sealing plate having two screw holes defined therein and corresponding to the two through holes of the housing, wherein two screws pass through the two through holes and fasten with the two screw holes; wherein the carrier body is assembled with a bicycle for providing a stable assembling effect, a high structural strength, and lightweight effect; when oil pressure is raised, the U-shaped portion deforms and the movable portion is pushed outwardly such that the holder is pushed outwardly.