Key

Abstract

The invention discloses a key. A key body of the key comprises a shell, a key piece and driving device, a sealing plate is arranged at one end of the shell, an annular through groove is formed in the middle of the sealing plate, a groove is formed in the outer wall of the shell and used for unlocking a lock cylinder inner lock plate component, the key piece comprises two unlocking plates and a connecting portion, the unlocking plates are used for unlocking a lock cylinder, the connecting portion is connected between the two unlocking plates, the unlocking plates are mounted on the outer wall side of the shell, and the unlocking plates can expand to two sides under pushing of the driving device and unlock elastic bead components in the lock cylinder. The key is matched with a lock with high burglar resistance, a lock plate component is arranged on the front section of a lock cylinder of the burglar-proof lock, elastic bead components are arranged on the rear section of the lock cylinder, a projecting column is arranged in a cavity of the rear section of the lock cylinder and can prevent an unlocking tool from completely extending into the cavity in the rear section of the lock cylinder, the tool cannot poke the all elastic bead components in the rear section of the lock cylinder, technical unlocking can be effectively eliminated, and burglar resistance is greatly improved.

Description

technical field [0001] The present invention relates to the field of keys. Background technique [0002] The anti-theft door lock cylinders used on the market are basically divided into three levels, namely A level, B level, super B level (also known as C level). According to the "National Mechanical Lock Standard", there are two grades of anti-theft door lock cylinders, A and B, and the Super B grade is an enhanced version of B grade developed by entrepreneurs. [0003] A-level locks: At present, the A-level anti-theft lock keys on the market mainly have a word key and a cross key. The internal structure of the A-level lock cylinder is very simple, limited to the change of the marbles, and the grooves of the pins are few and shallow. The anti-technical opening time is within 1 minute, and the mutual opening rate is extremely high. The marble structure is a single row of marbles or a cross lock. [0004] B-level lock: The B-level lock key is a flat key with double rows o...

AI Technical Summary

Problems solved by technology

The marble structure is double-row blades and V-shaped side columns to lock; if the lock cylinder is opened with a strong twist tool, the inside of the lock cylinder will be damaged, self-explosive and locked, resulting in failure to open

[0006] However, regardless of the A-level lock, B-level lock or the C-level lock with the highest anti-theft performance, since the unlocking tool may be completely inserted into the key slot of the lock cylinder, there is a possibility of being opened by technology, it is only a matter of time.

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