Sealed mechanical combination lock

Abstract

The invention discloses a closed-type mechanical code lock and relates to the field of dial-type combination mechanical code locks. The six dials of the code lock are correspondingly arranged on separate dial shafts; the unlocking codes of the dials can be replaced; the operation is simple, accurate and reliable; when insertion plates in a lock body are inserted into all openings of the dials at the same time, the lock can only be opened; and the lock body is internally provided with a sealing plate. During combination, a knob shaft in the outer panel of the lock can pass through the corresponding through hole of the sealing plate to complete the number checking operation, but the dials and the insertion plates have no contact; when the lock is opened, the sealing plate first closes a checking channel for checking numbers and re-drives to unlock, that is, when the dials make contact with the insertion plates, the checking channel is closed, so the position of the dial opening cannot bejudged at all, that is, the technical opening cannot be performed; when a handle is strongly reversed, the handle can be idling with overload protection; even if the outer panel of the lock is removed or destroyed, the lock cannot be technically opened; and the exposed camshaft can still idle.

Description

technical field [0001] The invention relates to the field of rotary disc-type number-checking mechanical combination locks, in particular to a hole-sealing type mechanical combination lock. Background technique [0002] The application range of the turntable-type mechanical combination lock is relatively wide. As a mechanical card group mechanism, it is often used on parts that need to be locked, such as file cabinets, vaults, safes, safes, security doors, and carry-on items (such as suitcases). Since then, there have been a series of problems, mainly reflected in the following aspects: [0003] One is that the unlocking process is very inconvenient. The main reason is that the registration process takes a relatively long time, so it is rarely used on civilian anti-theft doors. In particular, the combination lock with multiple turntables on the same axis needs to be rotated in both forward and reverse directions, which is very inconvenient to operate. Safes, safes, and tr...

AI Technical Summary

Problems solved by technology

[0004] The second is that some turntable-type mechanical combination locks with numbers cannot change the password, which is very inconvenient for hiding and keeping the password or remembering the password

Although some password locks can change the password, the performance is unstable, which makes it difficult for the owner to open.

Some change operations have high technical requirements, and it is difficult for users to adapt

[0005] Third, although the anti-technical opening functions are different, none of them can’t be technically opened

Some turntable-type numbered mechanical combination locks are driven to unlock by rotating the handle. If the handle has no anti-overload protection function, when the handle is twisted forcefully, the corresponding parts of the lock will be damaged, and even the lock will be destructively opened.

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