A key assembly for opening one or more locks in a graduated lock system

Abstract

The invention provides a key assembly for unlocking one or more locks in a graded lock system. The key assembly comprises first grade keys, second grade keys and a third grade key, wherein the first grade keys are keys in one-to-one correspondence with locks, only can unlock corresponding locks, and cannot unlock other locks; the second grade keys are keys each of which is capable of unlocking a group of locks in a plurality of groups of locks after grouping and incapable of unlocking locks in other groups, without using the first grade keys; the third grade key is a key capable of unlocking all of the grouped locks simultaneously, without using the first grade keys and the second grade keys; during working, graded grouping and management of the lock system can be realized by using different groups of unlocking tooth sockets in the axial directions of the circumferential outer edges of the top ends of key shafts as well as password latches sliding in the axial directions of the locks and selectively combined graded and grouped encoding latches, which are combined according to different length, to form secret keys with intersection, and the key assembly is advanced in principle, high in security, and suitable for important environments such as electric power, petrifaction and mining with high security requirements.

Description

[0001] 【Technical field】 [0002] The invention relates to a lockset in an industrial error prevention system, in particular to a key assembly for opening one or more locks in a hierarchical lock system. [0003] 【Background technique】 [0004] At present, many electric power, energy, industrial and mining enterprises have strict management procedures for the management and operation of equipment. It is not uncommon to see cases of major accidents due to non-compliance with operating procedures. In order to overcome this problem, comprehensive error prevention management is generally adopted. protection system. [0005] In the underlying protection of the comprehensive error prevention system, one of the most important links is the terminal lock. At present, most of these industrial locks use toothed key locks, which have complex structures and many problems; if the lock cylinder is displaced during use, The insertion and removal of the key lock cylinder is not smooth; or the ...

AI Technical Summary

Problems solved by technology

[0005] In the underlying protection of the comprehensive error prevention system, one of the most important links is the terminal lock. At present, most of these industrial locks use toothed key locks, which have complex structures and many problems; if the lock cylinder is displaced during use, The insertion and removal of the key lock cylinder is not smooth; or the structure of the lock cylinder is too simple, resulting in staggered opening; one of the main links is that the locks used are poor in safety and reliability, and the group management function is poor, which may easily cause the locks to be staggered and opened by mistake, resulting in failure and losses; there is an urgent need for an industrial-grade key assembly with a hierarchical management function that is different from the previous structure

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