Manual pull-out bed

A manual pull-out bed, comprising a base having a bottom portion in contact with ground, a movable support portion, a first back frame, a second back frame, and a seat frame;

• a bottom portion of the first back frame is hinged to a rear side of the base, a top portion of the first back frame is hinged to a first end, close to the first back frame, of the second back frame, and a second end, close to the seat frame, of the second back frame is hinged to a third end of the seat frame;
• left and right sides of the base are provided with a first sliding rail in a horizontal direction, respectively;
• and an end, close to the base, of the movable support portion is fixedly provided with a sliding block of the first sliding rail at left and right heads, respectively, allowing the movable support portion to move along a direction of the first sliding rail;
• left and right sides of the movable support portion are provided with a second sliding rail in a horizontal direction, respectively;
• the third end of the seat frame extends downwards to form a connecting portion at two heads, respectively, and the connecting portion is fixedly provided with a sliding block of the second sliding rail, allowing the seat frame to move along a direction of the second sliding rail;
• and
• the seat frame is supported by a first support rod, and a bottom portion of the first support rod is provided with a pulley in contact with the ground.