| 摘要 |
<p>A door locking mechanism which comprises a key body to be secured to the hem of a door, a slide key slidably mounted in the key body, the head of the slide key being protrudable out of the key body toward a door frame upon rotation of a locking knob so as to be shifted to its half-locked and complete-locked positions, a key latch to be secured to the door frame, and a half-locking arm anchored to the key latch and provided with an opening to receive the head of the slide key, wherein a pair of inlets are formed on the slide key and one of a pair of pins provided on the locking knob selectively engage one of the pair of inlets on the slide key to force the slide key to slide toward the door frame upon rotation of the locking knob, and a slide plate is vertically slidably mounted inside the key body and biased to hold the pins of the locking knob in a position where the pins disengage with the one of the inlets on the slide key, the slide plate being provided with means for positioning the slide key to its unlocked, half-locked and complete-locked positions.</p> |
