| 摘要 |
A pushbutton-type locking apparatus is provided and capable of being unlocked by pressing a set of predetermined pushbuttons and maintaining the unlocked condition to assume a latching condition. The apparatus comprises a plurality of unlocking pushbuttons (14A) and a plurality of non-unlocking pushbuttons (14B) retractably disposed on a front face of a holder case (7). A plurality of unlocking tumblers (15A) are preset for unlocking the apparatus and a plurality of non-unlocking tumblers (15B) are disposed in the holder case (7) at positions corresponding to the pushbuttons (14A),(14B), respectively, and each movable toward the rear side of the case (7) in response to a press of the corresponding pushbutton (14A),(14B). A slider is (21) disposed in the case (7) so as to be movable orthogonally to the moving direction of the tumblers (15A),(15B), wherein when only and all the tumblers (15A) are pressed through corresponding pushbuttons (14A), the slider (21) biased into a locking position is allowed to move to an unlocking position. The apparatus is characterized in that the holder case (7) is provided with a latching tumbler (15D) for holding the slider (21) which has reached the unlocking position in that position and a latching pushbutton (14D) for pressing the latching tumbler (15D).
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