| 摘要 |
A door lock for placement on a door handle having a knob with a front face having a keyhole therein. The door lock comprises a tubular casing substantially closed at one end by an end wall member and open at its other end for enabling the casing to be placed on the handle in a position wherein the knob is disposed in the casing with its front face adjacent the end wall member. The tubular casing has an inside radial dimension sufficient to permit the casing to rotate freely on the knob. A locking lever is pivotably connected to the casing generally adjacent its open end to permit the lever to swing between a non-obstructing position wherein the casing may be placed on the door handle and removed from the door handle, and an obstructing position wherein the lever obstructs the open end of the casing and is engageable by the knob when the casing is on the handle for preventing the casing from being pulled off the handle. The locking lever may be locked in the obstructing position whereby, when the casing is on the door handle, the knob cannot be turned and the substantially closed end wall member prevents a key from being inserted into the keyhole. A second embodiment of the invention is also disclosed.
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