Device for improving theftproof performance of mechanical coded lock

Abstract

The invention discloses a technical scheme for improving the theftproof performance of a mechanical coded lock, which can lock an unlock action in limited time through additionally providing a time-limited locking device to an unlocking rotary knob (handle) or a button and lock a dial (drive plate) in the unlocking process through additionally providing a locking device to the dial (drive plate). The time-limited locking device comprises a ratchet mechanism, a mechanical timer and a gear mechanism; and the locking device of the dial (drive plate) comprises a cam, a movable plate or rack and a locking plate. The locking device of the dial (drive plate) cuts off an approach for technically unlocking the coded lock; and the time-limited locking device ensures that the mechanical coded lock has the time-limited locking function of an electronic coded lock and the advantage of convenient alarm. The coded lock with fully mechanical structure and stable performance can fully satisfy the use requirements of a safe, a treasury door, a security door and automobile alarm and is particularly suitable for being used together with key locksets.

Description

Technical field [0001] The invention relates to an anti-theft device of a mechanical code lock, in particular to a device for improving the anti-theft performance of a mechanical code lock. Background technique [0002] At present, there are many kinds of combination locks sold and used on the market. As far as code locks are concerned, they can be divided into mechanical and electronic types. Mechanical code locks can be divided into single turntable type and multi-dial type. Some mechanical code locks do not need to know the code due to the defects of their own structure, tighten the lock head, and then turn the dial to open with the feel and hearing, and the anti-theft performance is not high. The security of mechanical combination locks on the market is guaranteed by a large number of passwords. The realization of the contradiction is that the greater the number of passwords of the lock, the more complex the structure of the lock, and the higher the precision requirements of ...

AI Technical Summary

Problems solved by technology

Some mechanical combination locks do not need to know the password at all due to their own structural defects, tighten the lock head, and then turn the dial to open it by hand and hearing, and the anti-theft performance is not high.

The safety of mechanical combination locks on the market is guaranteed by a large number of passwords. The contradiction is that the larger the password of the lock, the more complex the structure of the lock, and the higher the precision requirements of the parts, resulting in an increase in the cost of lock making; The larger the password, the longer the number of passwords, it is inconvenient to remember, and the unlocking operation is more cumbersome. It is difficult to take into account the anti-theft and applicability of the lock.

In addition, the chip type mechanical code locks widely used in the market, the actual number of codes is far less than the theoretical number of codes, masters of unlocking can also technically open with sensitive hand feeling, hearing and code pushing technology

Although the electronic combination lock has the advantages of large number of passwords, time-limited locking, and convenient alarm, it also has the disadvantages of easy aging of the circuit board, poor shockproof effect, poor working reliability as mechanical locks, waste batteries and circuit boards polluting the environment, and electronic locks Most combination locks are equipped with spare keyholes, which undoubtedly reduces the overall anti-theft performance of electronic combination locks

With the development of electronic technology, the emergence of universal decoders and code stealers has also posed a serious challenge to the anti-theft performance of electronic combination locks.

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