| 摘要 |
A locking apparatus 10 comprises a plurality of code entry buttons B, and a load plate 16 actuable between an inactive position (Fig. 1) in which it allows actuation of the buttons, and an active position (Fig. 2) in which it impedes actuation of the buttons. Spacing gaps may be provided between each code entry button and a corresponding code entry mechanism 14. The load plate may comprise obstruction members 30 which reside in the spacing gaps when the load plate is in its active position to impede actuation of the buttons. Alternatively, the load plate may comprise frictional abutment portions actuable into frictional abutment with the buttons. The load plate may be actuated into its active position by a drive member 18 integrated into a knob or handle used to unlock a locking bolt of the lock. The arrangement prevents deciphering of the code by a method of turning the knob or handle and gently pressing the code entry buttons to determine which code entry mechanisms 14 are coded by their relative resistance. |
