Quick-Assembly Adapter

A quick-assembly adapter, comprising:

• a carrying member having a central hole and at least one first fixing hole;
• a rotating ring being an annular body with a large through hole at a center thereof, and the rotating ring circumferentially provided with inner teeth on an inner side thereof;
• a screw fastener provided with a first gear at one end, the first gear having first teeth;
• a base including a base surface and a connecting portion, wherein the base surface is vertically provided with a central accommodating portion, at least one fixing portion and at least one gear accommodating portion, the at least one fixing portion and the at least one gear accommodating portion are horizontally arranged around a periphery of the central accommodating portion, the at least one gear accommodating portion is disposed between side walls of the at least one fixing portion and communicated with the central accommodating portion, the at least one fixing portion has at least one second fixing hole, and a number of the at least one second fixing hole is equal to a number of the at least one first fixing hole;
• at least one second gear each having second teeth;
• and
• at least one fastener, a number of which is equal to the number of the at least one first fixing hole,
• wherein in assembling, the screw fastener is accommodated within the central accommodating portion, the rotating ring is sleeved around a periphery of the at least one fixing portion, each gear accommodating portion accommodates the at least one second gear, the second teeth of the second gears close to the central accommodating portion are meshed with the first teeth, the second teeth of the second gears close to the rotating ring are meshed with the inner teeth, the carrying member covers the at least one fixing portion, the screw fastener extends to outside through the center hole, and the at least one first fixing hole is aligned with and fastened to the at least one second fixing hole by the at least one fastener, thereby fixing the carrying member and the base to each other;
• when the rotating ring is rotated, the inner teeth drive the second teeth, and the second teeth drive the first teeth, such that the screw fastener rotates in a direction same as or opposite to that of the rotating ring.