anti-theft device

Abstract

The invention discloses an anti-theft device which comprises a connecting rod, a hinge base and a fixed base. One end of the connecting rod is rotationally connected with the hinge base, the other endof the connecting rod is fixedly provided with a locking mechanism, the hinge base comprises a base plate and a pin shaft arranged at the middle portion of the upper end face of the base plate, a rotating sleeve is arranged at the end, located on the hinge base, of the connecting rod and is rotationally installed outside the pin shaft in a sleeving manner, an upper cover is in threaded connectionto the upper end of the pin shaft, a limiting column is arranged at the edge of the upper end face of the base plate, the height of the limiting column is equal to the distance between the upper endface of the connecting rod and the upper end face of the base plate, an arc-shaped protrusion block is arranged on the upper end face of the fixed base, an arc-shaped groove is formed in the inner wall of the arc-shaped protrusion block, the locking mechanism comprises a supporting base which is provided with an opening in the upper end and is internally provided with a cavity and a cover plate inthreaded connection to the upper end of the supporting base, the two side walls of the supporting base are provided with bolt mechanisms, and a driving device is arranged in the supporting base. Compared with a traditional anti-theft device, the anti-theft device improves the anti-theft effect.

Description

Technical field [0001] The invention relates to an anti-theft device. Background technique [0002] At present, anti-theft chain devices are generally installed on the door of a hotel. The anti-theft chain device currently installed on the door of a hotel generally includes a first fixing seat and a second fixing seat. The first fixing seat is fixed on the door frame and the second fixing seat The seat is fixed on the door body, the first fixing seat is fixedly connected with a lock chain, the end of the lock chain away from the first fixing seat is provided with a lock, and the second fixing seat is provided with a lock groove for cooperating with the lock, but When this kind of anti-theft chain is in use, in order to enable the lock catch to enter the lock slot, the length of the chain is generally longer. After the door lock is picked, the length of the chain is longer, so that the door can still be Open a certain angle so that criminals can still break the anti-theft device,...

AI Technical Summary

Problems solved by technology

[0002] At present, the anti-theft chain device is generally installed on the door of the hotel room. The anti-theft chain device installed on the hotel door generally includes a first fixed seat and a second fixed seat. The first fixed seat is fixed on the door frame, and the second fixed seat The seat is fixed on the door body, the first fixed seat is fixedly connected with a chain, the end of the chain away from the first fixed seat is provided with a lock catch, and the second fixed seat is provided with a lock slot for locking with the lock catch, but When this kind of anti-theft chain is in use, in order to make the lock buckle enter the lock groove, the length of the chain is generally longer. After the door lock is opened, because the length of the chain is longer, the door can still be opened Open a certain angle, so criminals can still break the anti-theft device, there is a big security risk

Images