Safety Supporting Frame Device and Supporting Frame Assembly

A supporting frame assembly comprising two safety supporting frame devices, wherein each of the two safety supporting frame devices comprising:

• a first frame including a first connecting portion, a second connecting portion, a first leg, and a second leg;
• a second frame including a third connecting portion, a fourth connecting portion, a third leg, and a fourth leg, the second frame is pivotably connected to the first frame and is pivotable relative to the first frame between a folded position and an extended position, wherein when the second frame is in the folded position, the third connecting portion is adjacent to the first connecting portion, the fourth connecting portion is adjacent to the second connecting portion, the third leg is adjacent to the first leg, and the fourth leg is adjacent to the second leg, wherein when the second frame is in the extended position, the third connecting portion is distant to the first connecting portion, the fourth connecting portion is distant to the second connecting portion, the third leg is distant to the first leg, and the fourth leg is distant to the second leg, and
• a supporting strap unit including a first strap and a second strap, wherein the first strap includes a first end fixed to the first connecting portion and a second end fixed to the fourth connecting portion, wherein the second strap includes a first end fixed to the second connecting portion and a second end fixed to the third connecting portion, and wherein when the second frame is in the extended position, the first strap and the second strap extend across and overlap each other;
• wherein the first frame includes a fifth connecting portion located between the first connecting portion and the second connecting portion, wherein the second frame includes a sixth connecting portion located between the third connecting portion and the fourth connecting portion, wherein the supporting strap unit includes a first buckle strap and a second buckle strap, wherein the first buckle strap includes a first end fixed to the fifth connecting portion and a second end having a first buckle, wherein the second buckle strap includes a first end fixed to the sixth connecting portion and a second end having a second buckle, and wherein the second buckle is detachably coupled to the first buckle.