Variable safe deposit box lock

Abstract

The invention discloses a variable safe deposit box lock. The variable safe deposit box lock comprises a lock box, a lock bolt and a lock cover, wherein the lock bolt is arranged in the length direction of the lock box and mounted on the internal bottom of the lock box; a short lock cylinder, a blade column and a long lock cylinder are sequentially arranged inside the lock box in the length direction; a plurality of main blades and displaceable blades stacked on each other alternately are sleeved to the blade column; the displaceable blades are mounted on the lock bolt; the displaceable blades move synchronously with the lock bolt and move up and down on the lock bolt and further are limited by a limiting pin; a customer key is matched with the displaceable blades to rotate; a master key is matched with the main blades to rotate; and a shifting fork pushing the lock bolt to perform reciprocating motion is arranged at the lower end of the short lock cylinder. The variable safe deposit box lock effectively provides lock safety and is capable of completely avoiding the probability that the key is copied. Keys with different threads can be directly replaced without demounting the lock and in the state that the lock is opened; and therefore, the variable safe deposit box lock is convenient for conventional operation. For the same lock of the same box number, keys are randomly distributed to customers and different customers never get the same key.

Description

technical field [0001] The invention relates to a safe deposit box lock, in particular to a variable safe deposit box lock. Background technique [0002] Most of the existing bank safe deposit boxes are box numbers, and the locks and sub-keys are in one-to-one correspondence. After the customer rents the sub-key, the sub-key is always in the customer's hands, so the protection of the key cannot be effectively controlled, and it is easy to be copied maliciously . The sub-key of this kind of lock is like a fixed password, but that password cannot be changed, which has potential safety hazards. Once copied, the safety of the safe deposit box will be more dangerous. [0003] There is also a key variable type, which means that the same lock can be used without a key, which greatly improves the safety factor of the lock. However, the operation of changing the key is complicated, and it requires professionals to use special tools to adjust the lock, which is not conducive to routi...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing bank safe deposit boxes are box numbers, and the locks and sub-keys are in one-to-one correspondence. After the customer rents the sub-key, the sub-key is always in the customer's hands, so the protection of the key cannot be effectively controlled, and it is easy to be copied maliciously

The sub-key of this kind of lock is like a fixed password, but the password cannot be changed, which has potential safety hazards. Once copied, the safety of the safe deposit box will be more dangerous.

[0003] There is also a key variable type, which means that the same lock can be used without a key, which greatly improves the safety factor of the lock. However, the operation of changing the key is complicated, and it requires professionals to use special tools to adjust the lock, which is not conducive to routine operation.

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