a security door

Abstract

It includes a door body and a door frame, the door body has a through hole, and there is a cat's eye in the through hole, a first accommodation chamber is arranged in the door body above the cat's eye, and a second accommodation chamber is arranged in the door body below the cat's eye, The first accommodating chamber and the second accommodating chamber communicate with the through holes respectively; a flexible sealing bag is arranged in the first accommodating chamber, and water is contained in the flexible sealing bag, and the flexible sealing bag is respectively connected with the first accommodating chamber It is connected with the cat's eye; calcium oxide, a door latch and a first shape memory alloy are arranged in the second accommodation cavity, and a lock hole corresponding to the door latch is arranged on the door frame, and the first shape memory alloy recovers the shape before deformation after being heated. During the shape process, the door bolt is driven into the lock hole; when the peephole is removed, water enters the second accommodation chamber and reacts with calcium oxide to heat the first shape memory alloy, so that it returns to the shape before deformation and drives the door bolt into the lock hole. into the lock hole to realize the locking of the door body and the door frame.

Description

technical field [0001] The invention relates to the field of anti-theft technology, in particular to an anti-theft door. Background technique [0002] The full name of anti-theft door is "anti-theft safety door". It has both anti-theft and safety performance. According to the "General Technical Conditions for Anti-theft Safety Doors", a qualified anti-theft door cannot be pried open by ordinary hand tools such as chisels, screwdrivers, crowbars, and portable electric tools such as electric hand drills within 15 minutes or a 615 square millimeter hole can be opened on the door leaf. opening, or a 38 mm2 opening within a semicircle of 150 mm2 at the locking point. [0003] In real life, people seldom lock the anti-theft door with a key for convenience, but simply close the anti-theft door so that people cannot open the anti-theft door from the outside, so as to achieve the effect of anti-theft; Open the security door. Contents of the invention [0004] The technical prob...

AI Technical Summary

Problems solved by technology

[0003] In real life, people seldom lock the anti-theft door with a key for convenience, but simply close the anti-theft door so that people cannot open the anti-theft door from the outside, so as to achieve the effect of anti-theft; open security door

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