A self-tightening and anti-loosening cap nut assembly

Abstract

The invention discloses a self-tightening and anti-loosening cap nut assembly. The hole is coaxial with the hemispherical hole, the through hole is provided with an anti-rust sleeve, and the anti-rust sleeve is provided with an internal thread hole; the anti-rust sleeve extends into the hemispherical hole, and there is a matching first joint between the anti-rust sleeve and the hemispherical hole. Limiting part, there is a second limiting part matched between the anti-rust sleeve and the through hole, the first limiting part includes a limiting ring groove set at the bottom of the hemispherical hole, and the upper end of the anti-rust sleeve is provided with an expansion part, The diameter of the inscribed circle at the upper end of the expansion part is smaller than the diameter of the internally threaded hole, the diameter of the circumscribed circle at the upper end of the expansion part is greater than the diameter of the internally threaded hole, and the upper end of the expansion part is provided with several open slots. The advantage of the invention is that it has the ability of anti-skid wire, prevents thread corrosion, ensures thread strength, and has the function of self-tightening and anti-loosening.

Description

technical field [0001] The present application relates to the technical field of cap nuts, in particular to a self-tightening and anti-loosening cap nut assembly. Background technique [0002] Cap nuts are usually used in conjunction with bolts and screws to connect and fasten parts. Cap nuts generally include a nut body and a cap connected to the nut body. It is suitable for places where the end of the bolt thread needs to be covered. The cap can prevent the bolt from protruding from the nut to cause injury to people or objects, and can also protect the bolt from being damaged by foreign objects. [0003] In the Chinese patent literature, patent number CN2020206197283 is a utility model patent authorized and announced on November 17, 2020. The application discloses a metal nut, including a nut body and a cap connected to the nut body. The nut body and the cap Flexible connection; the cap is movably connected to the nut body through a connecting device and can change the di...

AI Technical Summary

Problems solved by technology

[0003] In the Chinese patent literature, patent number CN2020206197283 is a utility model patent authorized and announced on November 17, 2020. The application discloses a metal nut, including a nut body and a cap connected to the nut body. The nut body and the cap Flexible connection; the cap is movably connected to the nut body through a connecting device and can change the distance between the nut body and the nut body under the action of an external force, and the connecting device includes an annular protrusion arranged on the outside of the nut body; the connecting device also includes There is an annular connector that cooperates with the annular protrusion and can rotate relative to the annular protrusion; the inner wall of the annular connector is provided with internal threads; the outer peripheral surface of the cap is provided with external threads; the lower end of the cap abuts against the upper end of the nut body; Its disadvantages are: 1. The thread of the nut is cut and formed by the nut, which is the same material as the nut, so it is easy to slip; 2. The cap nut does not have anti-loosening performance; 3. There is a hidden danger of loosening between the nut body and the cap

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