Nail-hole anti-theft lockset and matched key

Abstract

The invention relates to an anti-theft structure of a mechanical lockset. The lockset comprises a lock body, a lock cover, a spring, a cam, a lock cylinder, a spring bolt, a lock plunger, a chain and a key matched with the lockset. A through hole matched with the working part of the key is formed in the lock cover. The spring is arranged between the lock cover and the cam for supporting and positioning. Criss-cross fixing is achieved through the through hole of the lock cover and a key hole of the lock cylinder. A through hole which is the same as the through hole in the lock cover is formed in the center of the cam. Two symmetrical circular holes are formed in the outer side of the lock body and are used for adjusting the angle of the hole position of the cam. During unlocking, the key is inserted in the lock cover and the cam, rotated by 90 degrees in the lock body, then aligned with the key hole and inserted for unlocking. During unlocking, the through hole of the cam is rotated to the position matched with the key hole of the lock cylinder, and a closed space is formed by the hole of the cam and the hole of the lock cover in a cross manner at the moment. Before unlocking, the size of a keyhole is changed to the size of a nail hole so that an unlocking tool can be clamped, the tool is prevented from entering the key hole, the tool is prevented from strongly twisting the lock cylinder due to the fixed through hole in the lock cover, the cam can idle in the lock body so that an electric hand drill can be effectively prevented from damaging the lock cylinder, and the anti-theft performance of the lockset is reliable.

Description

technical field [0001] The invention relates to the technical field of mechanical anti-theft locks, in particular to a nail hole anti-theft lock and a matching key, which are suitable for anti-theft door locks, car locks, padlocks, U-shaped locks, chain locks, safe locks and the like. Background technique [0002] Mechanical locks have been in existence for more than 150 years, and are currently the most common type on the market. It is precisely because of the wide application of lock technology that locks are not anti-theft. It is more obvious, mainly in the following three aspects: 1. The structure of the lock cylinder is Composed of blades or marbles, the copper lock core is on the surface of the lock. The internal structure of the lock core can be understood by visually inspecting the key hole. , marbles, or use violent means to forcibly twist the lock cylinder to open the lock, use a hand electric drill to drill the lock cylinder, etc., to easily achieve the purpose of...

AI Technical Summary

Problems solved by technology

[0002] Mechanical locks have been in existence for more than 150 years, and are currently the most common type on the market. It is precisely because of the wide application of lock technology that locks are not anti-theft. It is more obvious, mainly in the following three aspects: 1. The structure of the lock cylinder is Composed of blades or marbles, the copper lock core is on the surface of the lock. The internal structure of the lock core can be understood by visually inspecting the key hole. , marbles, or use violent means to forcibly twist the lock cylinder to open the lock, use a hand electric drill to drill the lock cylinder, etc., to easily achieve the purpose of opening the lock. The teeth are not equal to each other, and your own key can be inserted into the lock hole of other people's homes, and even open the locks of other people's homes. 3. Lockpicking tools sold online, free download of unlocking instructional videos, small posters of the lock king on the door, Technicians with keys and unlocking can be found everywhere in the market, which shows that the current locks have poor anti-theft performance; electronic locks on the market, such as: IC card locks, fingerprint locks, electronic combination locks, are too expensive for the environment. Factors such as these cannot be widely used; locks that can be picked in a few minutes are like decorations, and cannot protect property and personal safety

Images