The utility model relates to a brake structure of a sickbed, which comprises a brake block limit group, a cam, a brake pedal shaft and a torsion spring. One end of the brake block limit group is pivoted on the brake caster fixed frame through a rotating shaft, a torsion spring is arranged between the lifting block and the wheel seat, a cam is installed on the brake caster fixed frame and is positioned above the brake block limit group, the brake pedal shaft is fixed on the top of the cam, and the brake pedal axis extends forward and backward. And a locking plate and a unlocking plate are installed. A brake block is protruded downward on one side of the bottom of the brake block limit group, and the locking plate and the brake block are on the same side.A bearing is installed at the lower end of the cam, a stop hook is set at the same side of the cam as the unlocking plate, and a stop post is set above the brake block limit group, and the stop post is set at the same side of the unlocking plate, and the stop post stops against the stop hook after the cam rotates.The structure of the invention is simple, and the brake action is convenient and labor-saving.一種病床刹車結構，包括刹車塊限位組、凸輪、刹車腳踏軸和扭簧，刹車塊限位組的一端通過轉軸樞接在刹車腳輪固定架上，升降塊和輪座之間設有扭簧，凸輪安裝在刹車腳輪固定架上且位於刹車塊限位組上方，刹車腳踏軸固定在凸輪頂部，刹車腳踏軸向前後延伸並安裝上鎖板和解鎖板，刹車塊限位組的底部的一側向下凸設一刹車塊，上鎖板與刹車塊位於同一側。凸輪的下端裝設一軸承，凸輪中與解鎖板同側位置上設置一擋勾，而在刹車塊限位組上方設有一擋柱，擋柱設置與解鎖板同側位置上，擋柱在凸輪轉動後對擋勾擋止。本創作結構簡單，刹車動作方便省力。
