Control mechanism of electronic lock having double bolts

Claim 1

A control mechanism of electronic lock comprising: an outside cover fixed on an outside surface of a door having an outside knob rotatably mounted in said outside cover and a sensor fixed on an inside surface of the outside cover operatively reading a coded number card inserted through a slot formed in said outside cover; an inside cover corresponding to said outside cover fixed on an inside surface of the door having an inside knob rotatably mounted in said inside cover and a thumbturn pivotally formed in said inside cover; a base secured between said outside cover and said inside cover having a battery socket for storing batteries therein for powering said sensor; a locking bolt means having a latch bolt formed on a lower portion of the locking bolt means normally resilently protruding outwardly and a dead bolt formed on an upper portion of the locking bolt means; and a control means operatively retracting or extending said two bolts when actuated by the sensor reading a correct coded card for opening or closing the door, said thumbturn operatively retracting or extending said dead bolt for unlocking or locking the door, said control means including a fixing plate secured to said base between said outside cover and inside cover, a rotating cylinder rotatably mounted in said fixing plate and said base, a rotating axle rotatably engageable in said cylinder and secured to both said outside knob and said inside knob by passing through said latch bolt for operatively retracting said latch bolt for opening the door when the dead bolt is unlocked, said rotating cylinder rotating engageabble with said axle, a tumbler set operatively coupling said cylinder with said axle, a restoring spring restoring said cylinder for a specific orientation of said cylinder, an electromagnetic coil formed under said cylinder operatively coupling said cylinder with said axle when powered by said batteries as sensed by said sensor, a counterweight rider normally overlain on said cylinder pivotally mounted with a biasing arm member thereon, and a bolt positioning member pivotally connected between said fixing plate and said base operatively biased by said arm member of said counterweight rider, when rotating said outside knob, said axle, and said cylinder to bias and raise said rider, for rotating said bolt positioning member for retracting said dead bolt for opening the door.