Self-locking nut assembly

Abstract

The invention discloses a self-locking nut assembly, and belongs to the field of machines. The self-locking nut assembly comprises a nut and a gasket, and is characterized in that one end of the nut body forms a protrusion around the axis of the thread; the threaded hole penetrates through the nut body and the bulge; at least two or more gaps are uniformly distributed in the periphery of the basearound the axis; a boss is arranged on the gasket; a concave cavity is formed in the boss; and the shape of the groove corresponds to that of the bulge and is in communication with a shaft hole. During assembly, the nut body is screwed up along with the matched screw rod, the bulge can extend into the concave cavity by means of extrusion deformation under the action of external force, so that a bulge thread is tightens a corresponding screw rod thread from the periphery. The diameter of the shaft hole of the gasket is slightly larger than the outer diameter of the matched screw rod, the gasketcan be smoothly arranged on the shaft hole of the gasket in a sleeving mode, no thread exists in the shaft hole, a tool does not need to be screwed into the shaft hole, and the gasket can be directlysleeved on the shaft hole of the gasket, so that mounting is facilitated. According to the self-locking nut assembly, only one nut and one gasket are needed, so that machining is easy; mounting is easy; and the anti-loosening effect is good.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a self-locking nut assembly. Background technique [0002] The use of nut and screw kits can be seen everywhere in daily life. Modern industrial equipment and facilities cannot do without it. As a connection between two objects, its stability and firmness are extremely important. The current technology is that the tightness of the nut-screw connection is mainly performed by improving the nut. There are several anti-loosening methods for nuts. One is to increase the frictional resistance of gaskets, and built-in anti-slowness such as springs, spring sheets, nylon, resin glue, etc., which have a certain anti-loosening effect, but the vibration intensity The anti-loosening effect is obviously insufficient when the vibration is large, the vibration mode is complicated, and the time lasts for a long time. The other is to use external reinforcements to prevent loosening, such as driving a wedg...

AI Technical Summary

Problems solved by technology

The disadvantage of this nut is that the matching accuracy of the upper and lower nuts is relatively high, otherwise, the outer cone and the inner cone may not be on the same axis during assembly, which will cause unbalanced holding force on the screw and affect the effect. During assembly, the convex cone produces elastic deformation, and the threads at its inner root will conflict with the screw threads and each other, resulting in poor interlocking state, and the locking effect will be greatly reduced

In addition, the installation of the two nuts is troublesome as mentioned above.

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