Patent ID: 7832528

Claim:
A brake mechanism for an operating table, being adapted to be provided on one of four corners of a rectangular base of the operating table, at least three wheels being provided on the base, the brake mechanism comprising a cam fixed by a rotating shaft, a hydraulic cylinder and a braking post, the rotating shaft including a shaft pole for pivoting the cam to the base; the cam providing the braking post with a translating offset distance, and including a hub and lugs, a central groove being defined through a center of the hub for surrounding the rotating shaft for rotation, shaft holes being respectively defined in the lugs; the hydraulic cylinder having a first cylinder and a a second cylinder, a branch pivoting the first cylinder to the base, a rod extending out of the second cylinder and engaging with the shaft holes of the cam via a rotating bar; and a braking post including a cylindrical post and a platform on a top of the cylindrical post, positioning posts downwardly depending from a bottom of the platform and at both sides of the cylindrical post for supporting springs, the braking post ascending in the base by means of the springs; wherein when the cam is driven by the rod of the hydraulic cylinder and rotates with the rotating shaft, the lugs pressing downwardly against the platform of the braking post, the braking post producing a translating offset distance, when the rod extends outward to a specified limit, the cam allowing the braking post to retract, the brake mechanism, whose braking post presses against floor incompletely, being pressed by the cam against the floor completely by means of controlling the rod to shrink, whereby the operating table is kept in position on uneven floor.