Eccentric fastener for eliminating nut looseness

Abstract

The invention relates to the technical field of hardware fittings, and discloses an eccentric fastener for eliminating nut looseness, the eccentric fastener comprises an eccentric nut and a concentric nut, the top of the eccentric nut is fixedly connected with a brake block, the brake block is in a crescent cone shape, the bottom side of the concentric nut is provided with a concentric groove, and the concentric groove is fixedly connected with the eccentric nut. The cross section of the concentric groove is triangular, the center line of the eccentric nut and the axis of an inner threaded hole of the eccentric nut are in eccentric design, and the axis of the inner threaded hole of the concentric nut and the center line of the concentric nut are collinear. When the contact faces of the brake block and the concentric groove are close to each other, the contact faces abut against each other, so that the brake block of the eccentric nut abuts against the concentric groove of the concentric nut, friction fastening is achieved, and the anti-loosening purpose is achieved. The nut is effectively suitable for high-frequency strenuous vibration of aviation, high-speed rails, ships, locomotives, launching pads and the like, and risks caused by loosening and falling of the nut are eliminated. The use range of the device is effectively enlarged, and the use effect of the device is improved.

Description

technical field [0001] The invention relates to the technical field of hardware fittings, in particular to an eccentric fastener for eliminating loosening of nuts. Background technique [0002] Nuts and bolts are a very widely used mechanical fastener. When a normal nut and bolt are used to fix mechanical parts, due to mechanical movement or vibration, the nut is easy to loosen and fall off for a long time, causing the fixed parts to be displaced or loosened, which may cause damage to the mechanical parts at light level, and may cause serious damage to the mechanical parts. malfunction or accident. [0003] In the current state, when using nuts and bolts for mechanical fixing, in order to prevent the nuts from loosening, double nuts are usually used for fixing. However, this fixing method takes a long time or is very prone to loosening of nuts in a vibration environment. The effect is poor, and it is easy to cause mechanical failure. Therefore, in some cases, when the mec...

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 the existing state, when nuts and bolts are used for mechanical fixing, in order to prevent the nut from loosening, double nuts are usually used for fixing. Poor effect, easy to cause mechanical failure

Therefore, in some cases, when the mechanical parts are fixed by nuts and bolts, the bolts and nuts will be locked by welding. Although this method effectively prevents the machine from loosening, it causes great trouble for disassembly and cannot be reused. Causes waste of connecting fasteners

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