Double control safety box unlocked by key and inputting password

Abstract

The invention discloses a double control safety box unlocked by a key and inputting a password. An unlocking key is provided with a keying circuit; a conductive marble and a mechanical marble corresponding to a conductive contact and a mechanical contact of the unlocking key are arranged in a lock cylinder; a singlechip chip and a memory are arranged in the safety box; the output end of a trigger detection circuit connected with the input end of the singlechip chip is respectively connected with an unlocking electromagnet assembly and a nixie tube display; the memory stores storage the password corresponding to an unlocking key output password and an IC card emergency key password; and the keying circuit of the unlocking key is connected with the trigger detection circuit at the input end of the singlechip chip to form an unlocking key input signal circuit. The double control safety box remains a conventional unlocking form of an electronic safety box, cancels the emergency lock cylinder which has high failure rate and high potential safety hazard, substitutes a key button and a seven-segment nixie tube display for an operating button and a liquid crystal display screen, renovates the design thought of a safety box lockset, reduces the production cost of the overall safety box, and improves a safety factor of the electronic safety box.

Description

technical field [0001] The invention relates to a safe lock, in particular to an electromechanical integrated dual-control password key and a lockset which use a key to input a digital password and unlock the lock mechanically. Background technique [0002] my country updated the national standard GB10409-2001 on anti-theft safes in 2001. So far, there has been no major change in the locks of electronic combination lock safes. The low-cost plum key is used as an emergency unlocking device and has become the standard configuration of every electronic safe on the market today. [0003] As shown in Figure 4, it is the internal structural diagram of the small safe combination lock with the largest sales volume on the market, including a main control board 37, a liquid crystal display 25, an input button 26, an emergency lock cylinder 41, an emergency lock cylinder connecting rod 39, an electromagnetic Iron assembly 33, electromagnet connecting piece 40, main dead bolt interlocki...

AI Technical Summary

Problems solved by technology

CN101187272A proposes a mechanical and electronic combination lock controlled by a single-chip microcomputer. Although it proposes that a password and a password memory corresponding to the preset password of the single-chip microcomputer are provided on the key, and corresponding contacts are set on the periphery of the key hole of the lock cylinder, it cannot be used for On the safe, especially it cannot be used for emergency unlocking, its power supply and signal circuit structure is complicated, and it is not suitable for the security combination lock

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