Patent ID: 7232110

Claim:
An automatic actuation apparatus for a valve body having a water inlet, and a water outlet and a water chamber communicating between said water inlet and said water outlet, wherein said automatic flush actuation apparatus comprises: a valve member adapted for being disposed in said water chamber to control said water flowing from said water inlet to said water outlet; and a powering assembly, comprising: a power generator; a relief valve provided at said valve member for controlling said water flowing from said water inlet to said water outlet through said water chamber, wherein said relief valve has a water passage extended along said valve member to communicate said water chamber with said water outlet and comprises a valve stopper and a retaining element normally retaining said valve stopper on said valve member to close said water passage for controlling said water flowing from said water inlet to said water outlet; and an actuator driven by said power generator to move said relief valve between an auto-operated closed position and an auto-operated opened position, wherein at said auto-operated closed position, said valve stopper is sealedly retained to close said water passage for blocking said water passing to said water outlet, and at said auto-operated opened position, said valve stopper is moved to an opened position by said actuator for releasing said water pressure within said water chamber to allow said water passing to said water outlet, wherein said powering assembly is a sensor-operated powering assembly further comprising a power source and a CPU electrically connected with said power source and said power generator for sensing a presence of a user of said flushing system so as to active said power generator, wherein said valve member comprises a sealing platform sealedly supported on a valve seat to normally block said water flow from said water inlet to said water outlet, wherein said water passage is coaxially extended from said sealing platform to a bottom end thereof, wherein said resilient element is a compression spring disposed in said water passage for applying an urging force against said valve stopper so as to normally pull said valve stopper to close an opening of said water passage.