Twin shaft robbery protection alarm lock

Abstract

The invention discloses a twin shaft robbery protection alarm lock comprising a key hole, a lock cylinder casing and a lock cylinder shaft. The lock is characterized in further including a key positioning board, a key positioning hole, a plurality of key tooth space which middle parts are provided with intervals, and a key socket plate which periphery is fixed with the lock cylinder casing. The lock cylinder shaft is composed of a sleeve shaft and an inner shaft sleeved therein. An alarm contact of a combined aural and visual alarm is arranged near the inner side of the key positioning hole. A key matching with the twin shaft robbery protection alarm lock is further discloses in the invention. The lock and the key are matched by: the quantities and the widths of between a key positioning frame and the key positioning board of the lock cylinder, between the key positioning shaft and the lock cylinder key positioning hole, between the key tooth and the key tooth space of a lock cylinder key tooth space board, while the corresponding parameters of the matching points are variable, thereby, the matching ratio of the lock and the key can be greatly improved, the repetition rate of the key can be greatly reduced. In addition, the invention has advantages of simple structure, convenient use, easy production, and low cost, furthermore, the alarm lock is suitable for various locks.

Description

technical field [0001] The utility model relates to a lock, in particular to a lock with a turning key. Background technique [0002] The lock of existing turning key mainly contains cylinder lock and magnetic mechanical lock. The current pin lock is widely used because of its simple structure, convenient use and easy manufacture. It can drive the lock core and its rotating shaft to rotate by turning the key, and the rotation of the lock core rotating shaft drives the movement of the lock bolt to achieve opening or closing the lock. The lock cylinder of the pin lock and the rotation of its rotating shaft are realized by the matching of the length of the key teeth and the pins in the lock cylinder. Because the ratio of the key teeth of the pin lock to the length of the pins in the lock cylinder is low, the same key often occurs. The phenomenon of opening many locks greatly reduces the anti-theft performance. The magnetic mechanical lock is a kind of lock cylinder and key w...

AI Technical Summary

Problems solved by technology

The structure of the magnetic mechanical lock is more complicated, making it more difficult and costly

Moreover, due to the limited surface of the lock core and the key, the matching rate of the lock core and the key is also low, and the repetition of the key is also large.

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