Anti-theft screw assembly

Abstract

The invention relates to the technical field of anti-theft devices, in particular to an anti-theft screw assembly. The anti-theft screw assembly comprises an anti-theft screw and an assembly pressing cylinder. The assembly pressing cylinder comprises a pressing cylinder body and a clamping cylinder connected to the top of the pressing cylinder body. A screw rod of the anti-theft screw penetrates through the bottom of the pressing cylinder body. A clamping head of the anti-theft screw is clamped and sunken into the pressing cylinder body. A backing ring capable of freely rotating relative to the assembly pressing cylinder is connected around the exterior of the clamping cylinder. The anti-theft screw is sunken into the structure of the assembly pressing cylinder and cannot be detached with a non-special tool, and the probability of violent disassembly is avoided; due to the arrangement of the backing ring capable of rotating freely and the cooperation of an annular groove and a flange, the exterior of the anti-theft screw assembly is not likely to be clamped or pulled out and cannot be fixed or disassembled; due to the arrangement of a plug cover, the anti-theft screw assembly is not likely to be blown by wind or wetted by rain or affected by dust or other sundries, and the anti-theft screw assembly is not likely to be found; the anti-theft screw assembly has the high safety, stability and reliability.

Description

technical field [0001] The invention relates to the technical field of anti-theft equipment, in particular to an anti-theft screw assembly. Background technique [0002] At present, the doors of some outdoor box equipment (such as distribution boxes, communication boxes, oil and gas field wellsite equipment boxes, etc.) (generally made of 1mm to 3mm steel plates) mostly adopt conventional rotary cam locks or heaven and earth rod rotary locks commonly used in equipment. The tongue lock and the box cover generally adopt ordinary screws or anti-theft screws. The above two kinds of locks are common door locks, which are widely used in filing cabinets; the two kinds of locks are installed by opening holes in the door steel plate, and the heaven and earth pole rotary cam lock needs to open two more holes in the door. [0003] Due to the limited space and cost of doors made of thin steel plates outdoors, the door locks used are shorter, and the shorter lock cylinders have fewer ma...

AI Technical Summary

Problems solved by technology

[0005] Further, if the above-mentioned anti-theft anti-theft screws with special-shaped holes are arranged in the counterbore, the effect will be much better, but the counterbore is easy to be blocked or rusted, which will cause maintenance and disassembly troubles when maintenance is required.

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