| 摘要 |
The cylinder lock is provided with a resiliently biased auxiliary locking pin (40) which projects into the keyway, the auxiliary locking pin having a first end which is shaped to define in part a flaring tenon (46), and a second end (52) which engages a locking recess (50) in the lock shell (18). The cooperating key has a blade (24) with a longitudinal slot (60) shaped, in the manner of a mortise, to engage the first end of the auxiliary locking pin. The depth profile of the mortise increases from an initial tenon receiving depth at the blade tip, to a functional depth, at a point displaced from the blade tip. An aperture may be provided in the base of the key blade slot for cooperation with the first end of the auxiliary locking pin to permit, at the fully inserted position of the key, relative motion between the tenon and mortise. |
