Detachable portable and foldable type dual-purpose dining table and chair

The utility model relates to a detachable portable and foldable type dual-purpose dining table and chair. The detachable portable and foldable type dual-purpose dining table and chair is mainly composed of a first supporting leg chain, a second supporting leg chain, a tabletop plate, two stool plates, four cotter pins with the specification of D4.5, six flat countersunk double nib bolts with the specification of M12, and six nuts with the specification of M12. The flat countersunk double nib bolts with the specification of M12 and the nuts with the specification of M12 are used for fixedly connecting a first upper supporting leg 8 in the first supporting leg chain, a second upper supporting leg 16 in the second supporting leg chain and a tabletop plate 9 on the left and right sides of the tabletop plate respectively; a first lower supporting leg 3 with a rotary groove and a rotary hole, the first upper supporting leg 8 with a rotary shaft, a rotary groove and a rotary hole, and a first long supporting leg 1 with a rotary shaft in the first supporting leg chain are mutually connected two by two through a rotary pair with corner limiting and positioning and supporting functions; a second lower supporting leg 20 with a rotary groove and a rotary hole, a second upper supporting leg 16 with a rotary shaft, a rotary groove and a rotary hole, and a second long supporting leg 22 with a rotary shaft in the second supporting leg chain are mutually connected two by two through a rotary pair with corner limiting and positioning and supporting functions; therefore, the unfolded dining table and chair and a folded chair are supported and all components rotate relatively when the dining table and chair is switched from an unfolded state to a folded state, and the unfolded dining table and chair can realize the function of a chair through folding. The detachable portable and foldable type dual-purpose dining table and chair has a simple manufacturing process and is convenient to mount and detach; more space can be saved for public fields in non-meal time through folding.