Violent-opening preventing key cylinder with rotatable blades

Abstract

The invention relates to a violent-opening preventing key cylinder with rotatable blades. The key cylinder comprises a blade lock body with a built-in locking device. The locking device comprises a key cylinder connecting strip installed in the blade lock body and a drilling preventing sheet at one end of the blade lock body, wherein a first inner blade supporting sheet and a key cylinder assembly which are fixed through a key guide support are installed on one side of the drilling preventing sheet in sequence, a magnetic steel gasket is installed at the tail end of the key guide support, and magnetic steel at one side of the magnetic steel gasket is installed in a passive key cylinder inner hole in a buckled mode. According to the violent-opening preventing key cylinder with the rotatable blades, because the special anti-poking shaft structural design is adopted, the positions of square holes of the blades of the key cylinder are consistent, the blades and blade spacing sheets are limited by anti-poking shafts to be fixed, and it is guaranteed that a key can be inserted or pulled smoothly; because the key guide support is adopted, when the key is inserted or pulled, the key is not influenced by the rotary blades, the key can be conveniently aligned with a keyhole, and the key can be inserted or pulled smoothly; the key cylinder can idle when violent opening is carried out, the key cylinder is protected, safety performance is improved, and the potential safety hazard that according to a key cylinder of a pin tumbler lock, pin tumblers are damaged under the action of violence, and a lock body is opened is avoided.

Description

[0001] technical field [0002] The invention relates to a lock cylinder, in particular to a blade rotatable lock cylinder with anti-forced opening, belonging to the field of locks. Background technique [0003] The current blade lock cylinder uses blades instead of marbles. When the key is inserted into the keyhole of the lock cylinder, the teeth on the key are aligned with the blades arranged in a vertical line in the lock cylinder, and the key drives the lock cylinder to rotate to realize opening. This kind of blade lock cylinder has potential safety hazards: it may be replaced by a key into the keyhole for violent opening. Since the blade is set separately and can be toggled freely, it is easy to be tested by flipping one by one to crack and open the lock cylinder. The existing common blade lock cylinder still has the following disadvantages: the blade cannot be positioned, the key holes are not easy to align, and the key is inconvenient to insert and remove. Contents ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that the ordinary blade lock cylinder is easy to be opened by force and the key is inconvenient to insert and remove, and to provide a blade rotatable lock cylinder that can prevent strong opening and is easy to insert and remove the key

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