Foldable bed frame device

A foldable bed frame device comprising:

• a frame unit including
• a first frame that includes two first rails extending in a front-rear direction and being spaced apart in a left-right direction that is perpendicular to the front-rear direction, and
• a second frame that includes two second rails extending in the front-rear direction and being spaced apart in the left-right direction;
• a bed panel unit disposed on said frame unit;
• a drive unit disposed on said frame unit and configured to drive movement of said bed panel unit;
• and
• two pivot units, each of said pivot units being connected between a respective one of said first rails and a respective one of said second rails, and including
• a pivot member that is connected rotatably to the respective one of said second rails and the respective one of said first rails, and
• two extending members that extend respectively through the respective one of said second rails and the respective one of said first rails;
• wherein one of said first frame and said second frame is pivotable relative to another one of said first frame and said second frame to convert said foldable bed frame device between an open state and a closed state;
• wherein, when said foldable bed frame device is in the open state, said first frame and said second frame are arranged in the front-rear direction, each of said second rails of said second frame is aligned with a respective one of said first rails of said first frame in the front-rear direction, and said extending members of each of said pivot units respectively abut against two end portions of said pivot member of said each of said pivot units and are spaced apart from each other in the front-rear direction;
• wherein, when said foldable bed frame device is in the closed state, one of said first frame and said second frame is stacked on another one of said first frame and said second frame in a top-bottom direction that is perpendicular to the front-rear direction and the left-right direction, and said extending members of each of said pivot units abut against a center portion of said pivot member of said each of said pivot units and are spaced apart from each other in the top-bottom direction;
• and
• wherein said extending members of each of said pivot units are respectively proximate to and distal from each other when said foldable bed frame device is in the closed state and the open state.