Sealing screw

Abstract

The invention discloses a sealing screw. The sealing screw comprises a screw body; the screw body consists of a conventional screw head and a screw rod; an oil injecting hole is formed in the center position of the screw head; an oil storage tank is longitudinally formed in the center position of the screw rod, and is perpendicular to the ground; the oil injecting hole communicates with the oil storage tank; an oil conducting channel is horizontally and vertically formed in the oil storage tank with the oil storage tank perpendicular to the ground as reference; the oil conducting channel is outwards radiated in a ray form to penetrate through the screw rod to communicate with the external; the oil injecting hole is a T-shaped structure, and is matched with a T-shaped rubber plug; an annular groove is formed in the lower side surface of the screw head of the screw body around the connecting place between the screw head and the screw rod; a sealing ring is arranged in the annular groove; and when the sealing ring is put in the annular groove, the lower edge of the sealing ring exceeds the lower edge of the annular groove.

Description

technical field [0001] The invention belongs to the field of mechanical tooling, and relates to a screw, in particular to a sealing screw. [0002] technical background [0003] In the prior art, when the screw is screwed into the workpiece, anti-rust agent will be dripped on the edge of the screw to prevent rust in the later stage, but this traditional anti-rust agent dripping method often produces anti-rust agent during the dripping process It is difficult to penetrate, or the problem that the anti-rust oil cannot penetrate due to the close contact between the screw thread and the thread groove. In terms of material saving, traditional screw rust prevention often results in a large amount of waste of rust inhibitors, and cannot achieve better screw rust prevention. [0004] On the other hand, especially in the field of aerospace, the requirements for the sealing effect of screws are extremely strict, while the traditional screws are directly tightened when they are screwed...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the screw is screwed into the workpiece, anti-rust agent will be dripped on the edge of the screw to prevent rust in the later stage, but this traditional anti-rust agent dripping method often produces anti-rust agent during the dripping process It is difficult to penetrate, or the problem that the anti-rust oil cannot penetrate due to the close contact between the screw thread and the thread groove

In terms of material saving, traditional screw rust prevention often results in a large amount of waste of rust inhibitors, and cannot achieve better screw rust prevention.

[0004] On the other hand, especially in the field of aerospace, the requirements for the sealing effect of screws are extremely strict, while the traditional screws are directly tightened when they are screwed into the workpiece or equipment, and the sealing effect is determined by the tightness, but due to the machining error of the workpiece or equipment, steel parts It is difficult to achieve an absolute seal between direct butt seals

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