Turning mechanism for a patient confined to a bed

A turning mechanism for a patient confined to a bed, comprising

• a power source including a left and a right reduction gear motors fixedly connected to a bed;
• each of the reduction gear motors having a main toothed wheel connected to a shaft thereof;
• a first and a second movable frames disposed on a bed, and each including an elongated rod portion, and two transverse rod portions connected to the elongated rod portion at upper ends thereof;
• the movable frames being pivotally connected to a bed at lower ends of the transverse rod portions to be pivotal between a tilted position and a horizontal one where the elongated rod portions are substantially faced with respective ones of two opposite long sides of the bed;
• a first and a second adjusting members each including:
• (a) two propping rods;
• (b) first and second transverse transmission shafts disposed at opposite ends of the bed;
• the transverse transmission shafts having two ends turnably supported with supporting elements, which are fixedly joined to respective ones of opposite long sides of the bed;
• the first transmission shaft being equipped with a first and a second toothed wheels at one end thereof;
• the second transmission shaft being equipped with a toothed wheel;
• the transmission shafts each having a threaded action section;
• (c) two moving bases screwed onto respective threaded action sections of the transmission shafts;
• (d) a drive chain passed over both the first toothed wheel of the first transverse transmission shaft and the main toothed wheel of a corresponding reduction gear motor for passing on rotary movement of the reduction gear motor to the first transmission shaft;
• and,
• (e) a synchronizing chain passed over both the toothed wheel of the second transverse shaft and the second toothed wheel of the first transverse shaft for passing on movement of the first transmission shaft to the second transverse shaft;
• the propping rods of the adjusting members being pivotally connected to middle portions of transverse rod portions of corresponding movable frames at upper ends thereof;
• the propping rods of the adjusting members being pivotally connected to corresponding moving bases at lower ends thereof so that the moving bases move along respective threaded action sections to adjust position of the propping rods relative to corresponding movable frames when the corresponding motors are in action, and in turn, the movable frames are adjusted between a horizontal position and a tilted one;
• a sheet being connected to the elongated rod portions of the movable frames at two opposite long sides thereof.