High-strength anti-loosening screw nut

Abstract

The invention belongs to the technical field of hardware spare and accessory parts, and particularly relates to a high-strength anti-loosening screw nut. The high-strength anti-loosening screw nut comprises a first screw nut and a second screw nut, wherein the end, facing a contact object, of the first screw nut is a contact end, and the end backing to the object is a connecting end; a position limiting ring is arranged on the connecting end; notches capable of enabling a local part of the position limiting ring to deform after receiving external force are formed in the position limiting ringin the axial direction; the local part forms a deformable part; a first assembly groove is formed in the inner wall of an end opening of the second screw nut; a protruding part is arranged on the inner wall of the first assembly groove; and after the second screw nut is arranged on the position limiting ring in a sleeving way, the protruding part in the first assembly groove extrudes the outer wall of the deformable part of the position limiting ring, and enables the deformable part to inwards contract. The high-strength anti-loosening screw nut is divided into the first screw nut and the second screw nut, wherein the first screw nut is a fastening screw nut in direct contact with a fixed object; the second screw nut is an anti-loosening screw nut tightly abutted against the first screw nut; under the joint effects of the first screw nut and the second screw nut, the rotation of the first screw nut can be effectively prevented; and the stability and firmness of the fixed object are further ensured.

Description

technical field [0001] The invention belongs to the technical field of hardware parts, in particular to a high-strength anti-loosening nut. Background technique [0002] Nuts and bolts are a widely used mechanical fastener. When the usual nuts and bolts cooperate to fix the mechanical parts, due to the movement or vibration of the machine, the nuts are easy to loosen and fall off for a long time, causing the fixed parts to shift or loosen. malfunction or accident. [0003] In order to solve the problem of nut loosening, people have designed many anti-loosening nuts or devices according to different application conditions and environments, such as combined nuts, which include nuts and outer rings, and the outer rings are sandwiched between the nut and the fastened Objects are threaded together on the screw rod, the nut and the axial end of the outer ring are sleeved and riveted together, and the outer ring and the nut can rotate relative to each other. In this combined nut,...

AI Technical Summary

Problems solved by technology

When the usual nuts and bolts cooperate to fix the mechanical parts, due to the movement or vibration of the machine, the nuts are easy to loosen and fall off for a long time, causing the fixed parts to shift or loosen. failure or accident

[0003] In order to solve the problem of nut loosening, people have designed many anti-loosening nuts or devices according to different application conditions and environments, such as combined nuts, which include nuts and outer rings, and the outer rings are sandwiched between the nut and the fastened Objects are threaded together on the screw rod, the nut and the axial end of the outer ring are sleeved and riveted together, and the outer ring and the nut can rotate relative to each other. In this combined nut, the nut and the outer ring can rotate relatively. It solves the phenomenon that when the bolt assembly is tightened, the nut is easy to scratch the surface of the fastened object; but this combined nut does not solve the problem that the nut is easy to loosen and fall off, and the loose nut is easy to make the combined nut The force is not uniform, resulting in a large shear force on the bolt assembly, resulting in damage to the outer ring and shortening the service life of the combined nut

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