Multi-purpose folding chair

A multi-purpose folding chair comprising:

• two supporting side plates;
• two connecting plates, each of the two connecting plates formed with a first folding line, the two connecting plates arranged between the two supporting side plates and pivotally connected to the two supporting side plates, such that the two connecting plates are foldable in a flat manner along the first folding line;
• a seat plate formed with a second folding line, the seat plate arranged between the two supporting side plates, two sides of the seat plate respectively and pivotally connected to the two supporting side plates, and the seat plate is foldable in a flat manner through the second folding line;
• and
• a kneeling plate formed with a third folding line, two sides of the kneeling plate respectively and pivotally connected to the two supporting side plates, wherein
• at least one inner side of the two supporting side plates, the two connecting plates, the seat plate, or the kneeling plate is formed with a reinforcement structure, wherein
• each of the two supporting side plates is formed with a first rotating part, and
• the multi-purpose folding chair further comprises two armrest plates and a back plate, two ends of each of the two armrest plates are respectively formed with a second rotating part and a supporting part, the two armrest plates are respectively pivotally connected to the first rotating parts of the two supporting side plates through the second rotation parts, the back plate is formed with a fourth folding line, and the back plate is arranged between the two armrest plates, two sides of the back plate are pivotally connected to the supporting parts of the two armrest plates, the back plate is foldable in a flat manner along the fourth folding line, such that a distance between the two supporting side plates is reduced;
• an inner side of each of the two armrest plates is formed with a limiting part, the two supporting side plates each having a corresponding surface corresponding to the limiting part is formed with a corresponding limiting part with a curved track, the limiting part slides against the curved track formed by the corresponding limiting part, such that the two armrest plates are rotatable relative to the two supporting side plates along the curved track, and
• each of the two connecting plates is foldable in a flat manner along the first folding line, the seat plate is foldable in a flat manner along the second folding line, and the kneeling plate is foldable in a flat manner along the third folding line, such that the distance between the two supporting side plates is reduced.