| 摘要 |
A push-button lock device is provided which allows to increase the combinations of unlocking numbers without increasing greatly the numbers of push-buttons and tumblers by enabling unlocking operation of a plurality of pushes to push the same push-button a plurality of number of times. In a push-button lock device having a plurality of push-buttons are provided on a holder case so as to be capable of extending and retracting in a surface thereof, a plurality of kinds of tumblers arranged to move toward a backside of the holder case when pushing the push-button and provided within the case correspondingly to the push-buttons, a slider provided within the holder case to move in a direction orthogonal to a moving direction of the tumbler, the slider urged in a lock position being allowed to an unlocking position by push-operating some of preset unlocking tumblers through the push-buttons, provided are a positioning mechanism for setting temporary fixing positions of the tumblers in a plurality of positions in a front-back direction of the holder case, and an intermediate mechanism for advancing, each time the push-button is pushed once, the temporary fixing position of the tumbler corresponding to the push-button toward the backside of the holder case one by one.
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