Patent ID: 6389622
Filing Date: 2002-05-21
Classification: A61G

Abstract:
A hospital bed comprising:a bed frame installed with a driving device; a bed platform structured with a plurality of plates and being driven by the driving device to elevate the bed platform; a front plate attached at a front end of the bed frame by clamping pieces; a distal plate attached at a rear end of the bed frame by clamping pieces; and at least two movable side rails respectively installed at two sides of the bed frame and separately lifted or descended by a patient, each of said slide rails having an inner concave groove on a side thereof for offering a place for finger insertion to push or pull the side rail for lifting or descending, an inner side of at least one side rail having a controller for controlling the driving device, the clamping pieces including: a fixing seat having a bottom plate and a front clamping plate, the bottom plate being fixed on the bed frame, and the front clamping plate being formed with a movable hole at its center, two sides of the movable hole being extended backwards to be formed with two parallel outer lateral plates, and a rear pivotal shaft passes through the space between the two outer lateral plates; a pressing plate having two side extending rearwardly to form two parallel inner lateral plates, the two inner lateral plates being formed with a front through hole and a rear through hole respectively arranged at a front position and at a rear position, the two inner lateral plates of the pressing plate being inserted into the movable hole and the rear pivot shaft being passed through the rear pivotal hole, whereby the pressing plate is rotatable with respect to the fixing seat, a front pivotal shaft being passed through the front through hole; a movable rear clamping plate being combined with the fixing seat by a bottom thereof and being formed with a space for clamping the front plate and the distal plate; and a tightening block disposed between the two lateral plates and formed with a pivotal hole, the front pivotal shaft being passed through the pivotal hole, the tightening block having a first groove formed therein for releasable engagement with the rear pivotal shaft, the front pivotal shaft and the first groove being respectively arranged at a front position and a rear position.