Mechanical coded lock

Abstract

The invention discloses a mechanical coded lock. The mechanical coded lock comprises a main shaft, wherein a code wheel, a code input mechanism and an engagement-disengagement ring are arranged on themain shaft in a penetrating manner, the code wheel is capable of being matched with a locking plate or an unlocking plate, the engagement-disengagement ring is connected with a square shaft, and a rack is arranged on the other surface of the locking plate and engaged with a gear shaft; and during unlocking, a locking pin on the locking plate needs to be inserted into a code groove of the code wheel or a locking groove to fix the code wheel and the code input mechanism, then a code pin on the unlocking plate is inserted into the code groove in the code wheel in a trying manner, if the coded lock can be unlocked when the code pin is inserted into the code groove, the code pin cannot be inserted into the locking groove due to the length difference of the code groove and the locking groove, and in this way, the lock cannot be broken through a mechanical comparison method; the engagement-disengagement ring is driven through the square shaft, the engagement-disengagement ring drives the code wheel to move along the main shaft, the code wheel is capable of being separated from the code input mechanism and freely rotating by generating horizontal movement while being engaged with the codeinput mechanism, and at this moment, a code can be re-set; and the mechanical coded lock is ingenious in design concept, and has the characteristics of being high in safety and practicability.

Description

technical field [0001] The invention belongs to a mechanical lock, in particular to a mechanical combination lock. Background technique [0002] In daily life, in order to improve the anti-theft performance of the mechanical lock, a password mechanism is often set in the mechanical lock, and the lock can be opened mechanically only after the password is entered correctly. [0003] The principle of the mechanical combination lock is to set a matching combination groove and combination pin between the combination wheel and the lock pin. The combination groove rotates together with the combination wheel, and the combination pin moves together with the lock pin. , then the lock pin can be moved in place, and the lock tongue can only be opened by the opening mechanism at this time; [0004] There are two main methods of cracking secrets in the existing mechanical coded locks: the first one is to obtain information by scanning the internal mechanism of the lock; Refers to the st...

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