Anti-rust screw

Abstract

The invention discloses an anti-rust screw. The anti-rust screw comprises a first fixed block, a second fixed block, a screw cap, a rubber gasket, a first screw and a second screw, wherein the interior of the first fixed block is carved with first fixed block threads, the first screw can be screwed and fixed in the first fixed block through the first fixed block threads, the interior of the firstscrew is carved with first screw threads, the second screw can be screwed and fixed in the first screw through the first screw threads, the bottom of the second screw is provided with a pointed part,the pointed part can be used for forming corresponding threads through self-drilling in the second fixed block and fixed in the second fixed block, the first fixed block and the second fixed block canbe connected together through the first screw and the second screw, the corrosion of external factors such as air and water to screws is obstructed through the screw cap and the rubber gasket, the physical life of the screws is prolonged, and the reliable fixation between fixing parts is guaranteed through the cooperation of the first screw and the second screw.

Description

【Technical field】 [0001] The invention relates to the technical field of screws, in particular to the technical field of anti-corrosion screws. 【Background technique】 [0002] Screws are widely used as fastening joints, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulic pressure and other industries. Usually, screws are cylindrical and have threads on the surface, so that the screws can lock other objects , and the diameter of the head is larger, and there are grooves engraved on it, so that the screw can be used to apply pressure on it, while the self-tapping self-drilling screw is provided with a pointed tip or a tail saw at the end of the screw. When the screw is used, Through concentrated pressure to open holes on the surface of the object, the screw is embedded and rotated, and the inner wall of the object is squeezed to form a thread that matches the thread on the surface of the screw. [0003] In practical applica...

AI Technical Summary

Problems solved by technology

[0003] In practical applications, the heads of the screws are generally exposed, and they will rust or be corroded if they work in a humid environment for a long time. The damaged screw heads make it difficult to screw out or screw in the screws, and the connection between the screw heads and the fixing parts There are gaps between the contact surfaces, which will leak when exposed to water, which will rust the screw body and the iron fixing parts or rot the wooden fixing parts, so that the fixing degree between the fixing parts cannot be guaranteed, which may make the screw body and the iron fixing parts rot. The fixing parts cannot be separated or loosened, and if they are specially lubricated, the lubricating effect is very poor and the expected lubricating effect cannot be achieved. This problem seriously affects the service life and firmness of the screws, which is not conducive to long-term use.

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