Automatic locking anti-loosening nut

Abstract

The invention discloses an automatic locking anti-loosening nut which comprises a nut body. The nut body is provided with a threaded hole, an annular boss which extends outwardly is arranged at an end of the nut body, an annular elastic locking plate is fixed into an annular hole of the annular boss, a center hole of the annular elastic locking plate is concentric with the threaded hole, and the inner diameter of the elastic locking plate is smaller than that of the threaded hole. Protrusions which are radially protruded towards a hole center are arranged on the inner surface of the locking plate. A flange is further arranged on the nut body, and continuous radial antislip teeth are arranged on an end surface of the flange. The automatic locking anti-loosening nut has the advantages that the automatic locking anti-loosening nut can be reliably locked, shock-resistant and anti-loosening effects can be realized, the deformation-resistant metal locking plate is excellent in elastic resetting ability and can be reset after being used and detached, accordingly, original functions of the automatic locking anti-loosening nut can be kept, the automatic locking anti-loosening nut is reusable and is convenient to detach, and the cost can be saved; the nut is provided with the flange with the antislip teeth, so that anti-loosening and antislip friction force can be greatly increased, and the automatic locking anti-loosening nut is reliable in anti-loosening performance.

Description

technical field [0001] The invention relates to a nut, in particular to an automatic locking anti-loosening nut. Background technique [0002] At present, most of the nuts commonly used in the market are standard parts, and they generally do not have the function of preventing loosening. Therefore, during use, it is usually necessary to configure additional elastic washers that are compatible with the nuts to achieve the purpose of anti-loosening. Not only the operation process is relatively It is complex and cumbersome, and the anti-loosening effect is not ideal. At the same time, it needs to consume a large amount of supporting fasteners such as elastic washers and flat washers, and the production cost is relatively high. [0003] The connection pair connected by ordinary nuts will loosen and slip when working in the environment of vibration and irregular fluctuations, which will affect the reliability of the connection, while the rigidly deformed lock nut is generally use...

AI Technical Summary

Problems solved by technology

The method of fixing the nylon washer on the screw hole is basically the same or similar to the principle commonly used by self-locking nuts at present. Both of them adopt the method of multi-point closing at the thread end. Most of the self-locking nuts and bolts are interference fits, usually once Permanent use, repeated use is easy to damage the nut or bolt, and it is also easy to cause self-locking failure, which reduces the reliability of the connection

Moreover, the elastic washer disclosed in this patent is fixed on one end face of the nut body. The contact end face of the washer and the parts to be fixed is flat, so when subjected to severe vibration, the washer will still slip and rotate relative to the parts to be fixed. Loose, fastening reliability is still not high

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