Patent ID: 8069872

Claim:
An automatic control device for a foldable tent connecting to several roof strut sets; wherein, said automatic control device is comprised of a central standing base containing a sliding hub, a spring and a tappet roller inside; said tappet roller is received inside of the sliding hub for adjoining one end of said spring axially, another end of said spring is adjoining a top inside surface of said central standing base; said sliding hub is connected to connectors radially and pivotally; said connectors are respectively pivoted on a rim of said central standing base at middle points, another ends of said connectors are individually connected to the roof strut sets; several locking pins built inside of the central standing base for engaging with said tappet roller, coordinating to those said tappet roller with a plurality of beveled surfaces for the locking pins pushing to roll, and a plurality of catching slots for locking up the locking pins.