Bolt assembly having non-loosening nut

Abstract

The present invention relates to a bolt assembly having a non-loosening nut and, more particularly, a bolt assembly having a non-loosening nut in which a pair of non-loosening nuts that move along a male thread pitch of a bolt are prepared so that the pair of non-loosening nuts press and spread to each side a pair of adjacent male threads of the bolt, thereby restricting the rotation of the bolt to suppress the loosening of the bolt. To this end, the present invention provides the bolt assembly having the non-loosening nut, the bolt assembly comprises the following components: a bolt includinga first male thread; a first nut, which has a first female thread screw-coupled to the first male thread of the bolt, and has, on the outer circumferential surface, a second male thread formed in thedirection opposite to the first male thread; and a second nut, which has a second female thread that is screw-coupled to the second male thread of the first nut, and has, in the center, a non-loosening female thread which corresponds to the first female thread and is screw-coupled to the first male thread via the first female thread. The bolt assembly having the non-loosening nut is characterizedin that the groove depth of the non-loosening female thread is formed deeper than the groove depth of the first male thread, thereby forming a gap between the first male thread and the non-looseningfemale thread, while preventing a gap from being formed between the first female thread and the first male thread.

Description

technical field [0001] The present invention relates to a bolt assembly with a lock nut, and more particularly, to a bolt assembly that squeezes the outer thread of the bolt to constrain the rotation of the bolt while moving on the pitch of the outer thread of the bolt, so that the bolt is not easy to loosen. Locknut bolt assembly. Background technique [0002] In general, bolts and nuts are used to fasten two or more separate objects and assemble them into a single body, and thus are widely used in various fields such as assembly of auto parts, assembly of electronic parts, and assembly of furniture. [0003] Such a conventional bolt and nut fastening structure is composed of a bolt inserted into an object to be fastened as a fastening target, and a nut threadedly engaged with the bolt. [0004] In addition, in order to increase the tightening force of bolts and nuts and prevent loosening due to external shocks and vibrations, washers are inserted inside the bolts and nuts...

AI Technical Summary

Problems solved by technology

[0011] However, the structure of the existing anti-loosening structure of the bolts and nuts is complicated, and a series of processes for fastening and loosening the bolts and nuts are very cumbersome

[0012] In addition, the front end of the bolt needs to be processed additionally, resulting in an increase in production cost, and the bending of the fixing leg reduces the durability of the fixing leg

[0013] In particular, after tightening the nuts, it is necessary to bend a plurality of fixing legs one by one, which increases man-hours and reduces the convenience and productivity of the work.

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