Frame with improved stability and safety

A foldable frame comprising:

• a first frame unit and a second frame unit pivotally coupled with each other at proximal sides thereof and rotatable with respect to each other between a folded state and an unfolded state, wherein each of the first and second frame units comprises a first mounting member disposed at a first side of the foldable frame and a second mounting member disposed at a second side of the foldable frame;
• a middle leg assembly coupled with the first and second frame units at the proximal sides of the first and second frame units, wherein the middle leg assembly comprises:
• a third upper member having a first end portion coupled to a proximal end portion of the first mounting member of the first frame unit and a proximal end portion of the first mounting member of the second frame unit by a first coupler disposed at the first side of the foldable frame and a second end portion coupled to a proximal end portion of the second mounting member of the first frame unit and a proximal end portion of the second mounting member of the second frame unit by a second coupler disposed at the second side of the foldable frame;
• a first middle leg disposed at the first side of the foldable frame and having an upper end portion connected to the third upper member adjacent the first end portion of the third upper member;
• and
• a second middle leg disposed at the second side of the foldable frame and having an upper end portion connected to the third upper member adjacent the second end portion of the third upper member;
• and
• a single safety enhancement assembly disposed at the first side of the foldable frame to prevent accidental folding of the first and second frame units, wherein the single safety enhancement assembly comprises:
• a locking mechanism connected to the first middle leg of the middle leg assembly;
• a first enhancement member connected to the first mounting member of the first frame unit and the locking mechanism;
• and
• a second enhancement member connected to the first mounting member of the second frame unit and the locking mechanism,
• wherein no additional enhancement member is disposed between the second middle leg of the middle leg assembly and the second mounting member of the first or second frame unit;
• and
• wherein the locking mechanism selectively locks the first and second enhancement members when the first and second frame units are in the unfolded state, thereby preventing accidental folding of the first and second frame units.