Anti-rust tapping screw

Abstract

The invention discloses an anti-rust tapping screw. A screw body is internally provided with an oil injection hole, an oil storage groove, an oil guide channel and other parts, so that anti-rust oil in the oil storage groove can flow to the surface of a screw rod of a screw post body through the oil guide channel; the oil injection hole is sealed by using a sealing bolt to prevent the anti-rust oil from making direct contact with the outside atmosphere and prevent oxidization; an external thread arranged on the sealing bolt corresponds to an internal thread of the oil injection hole, so that the sealing effect is improved; a groove formed in the sealing bolt facilitates installation and disassembly of the sealing bolt; a self-tapping thread is arranged on a screw tip, so that the screw body has the self-tapping characteristic. Compared with the prior art, the anti-rust performance is good while the characteristics of self-tapping screws are taken into consideration.

Description

【Technical field】 [0001] The invention relates to the field of mechanical tooling, in particular to a rust-proof self-tapping screw. 【Background technique】 [0002] The screw is a tool for fastening the parts of the object step by step by using the physical and mathematical principles of the oblique circular rotation and friction of the object. Screw is a general term for fasteners, a daily colloquial language. Screws are indispensable industrial necessities in daily life: tiny screws used in cameras, glasses, clocks, electronics, etc.; general screws for TVs, electrical products, musical instruments, furniture, etc.; large screws for engineering, construction, and bridges. Screws and nuts; transportation equipment, aircraft, trams, automobiles, etc. are used together with large and small screws. Screws have important tasks in industry. As long as there is industry on the earth, the function of screws will always be important. Screw is a common invention in people's produ...

AI Technical Summary

Problems solved by technology

[0003] The self-tapping screws in the prior art generally need to face the corrosion of the atmosphere and water vapor. In the production process, people often coat the screws with an anti-rust layer, but the effect of the anti-rust layer is not very satisfactory. Once the screw Corrosion occurs, the fastening effect decreases, and the difficulty of disassembling the screw will follow. Therefore, it is necessary to propose a rust-proof self-tapping screw

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