| 摘要 |
An impact resistant door lock contained in a housing is shown mounted inside the door to the door frame or wall, but on the opposite side from the hinged mount of the door. Within the housing is a rotating shaft and a fixed shaft. Unidirectional friction springs allow the rotating shaft to only rotate in one direction. Slideable arms mounted on the ends of the rotating shaft, slide to an open position to allow the door to be opened, or rotate to a closed position to prevent the door from being opened. Adjustments allow the impact resistant door lock to be positioned firmly against the structure of the door frame and/or wall to insure a solid abutting relationship.
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