Patent attributes
A retractable cup holder is provided, including: a main base, disposed with a plurality of guide grooves inside located at different heights, and with a placement surface as a top; a gear set, located inside the main base; at least three surrounding arms, each including a sliding element and a surrounding element connected to each other, the sliding element being located movably in the corresponding guide groove; the plurality of the surrounding elements being erected around the main base, each peripheral gear being positioned corresponding to the sliding element, and the actuating gear meshing with the actuating rack; when one of the surrounding arms moving, the rest of the surrounding arms moving synchronously through the meshed gear set; a stopper; partially restricted in the main base but movable for a short distance; after the stopper engaging a sliding element, the surrounding arm becoming unable to move.
