Self-expanding waterproof anti-loosening connecting assembly

Abstract

A self-expanding waterproof anti-loosening connecting assembly comprises a self-tapping screw and a reaming piece, wherein the self-tapping screw comprises a screw head and a screw rod, a bowl-shapedrubber cap with a downward opening is arranged on the lower portion of the screw head, a first through hole is formed in the middle of the top of the rubber cap, the screw rod penetrates through the first through hole, a twist drill blade is arranged at one end, close to the rubber cap, of the screw rod, and a self-tapping thread is arranged at one end, far away from the rubber cap, of the screw rod; and a second through hole is formed in the middle of the reaming piece, the reaming piece can sleeve the self-tapping thread through the second through hole, and the diameter of the second throughhole is smaller than that of the twist drill blade. According to the self-expanding waterproof anti-loosening connecting assembly, the sealing waterproof performance is good, rainwater can be prevented from entering the drilling area of the screw, in addition, the stress balance cannot be damaged after the reaming piece punctures a plastic plate, the plastic plate is not prone to cracking and spreading due to the isolating effect of the reaming piece, and the self-expanding waterproof anti-loosening connecting assembly has quite wide application prospects.

Description

technical field [0001] The invention relates to the technical field of plate connectors, in particular to a self-expanding waterproof and anti-loosening connection assembly, which is used to install and fix plastic panels such as endurance boards and solar panels on the roof. Background technique [0002] The boards used on the top of the awning mainly include sun boards and endurance boards, which are used in public facilities such as office buildings, hotels, villas, schools, stadiums, etc., and can be fixed and installed on the roof by self-tapping screws. After the self-tapping screw is drilled into the sunshine board or the endurance board, the original stress balance of the board will be destroyed, so that cracks will first appear in the area near the drilled hole after a period of time, and once the cracks begin to appear, the stress of the board will be reduced. It is more unbalanced, so that the cracks gradually spread and widen around, which not only damages the pl...

AI Technical Summary

Problems solved by technology

After the self-tapping screw is drilled into the sunshine board or the endurance board, the original stress balance of the board will be destroyed, so that cracks will first appear in the area near the drilled hole after a period of time, and once the cracks begin to appear, the stress of the board will be reduced. It is more unbalanced, so that the cracks gradually spread and widen around, which not only damages the plastic plate, but also easily causes the screws to loosen

In addition, the sun panels and endurance panels are installed on the open roof, so it is inevitable to be exposed to rain for a long time. The rain can easily enter the drilled area of ​​the screw, which will easily cause the screw rod to rust. The rusted screw is easy to loosen and fall off and lose its connection function.

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