| 摘要 |
An Electric Door Strike is disclosed wherein a notch is provided in a strike frame for receiving a latch or a dead bolt. A pivoting shutter is positioned adjacent the notch and is pivotable between an open position to admit the dead bolt when the latter is in its extended position, and a closed position wherein the notch receiving the dead bolt is partially covered. In the closed position the dead bolt may not be withdrawn from the strike frame except by being withdrawn into the door lock mechanism. The shutter is mounted on the shaft of a rotary solenoid which, when energized, pivots the shutter to the open position. A stop pin is secured to the shutter and engages a mating detent in the strike frame when the shutter is closed to prevent the shutter from being forced open from a position externally of the door. A latch spring is mounted within the strike frame in an interfering position with both the dead bolt and the shutter; the spring is urged, by contact with the dead bolt, out of the path of the shutter to permit the latter to pivot into its closed position.
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