| 摘要 |
<p>The present invention relates to a fastening structure of a self-lock bolt and nut and, more specifically, to a fastening structure of a self-lock bolt and nut, which minimizes the number of components of a fixing nut, a rotation preventing member, a self-lock nut which are fastened to a fixing bolt to improve productivity and assembly, thereby reducing the cost of products, and which controls the forward rotation of the self-lock nut by maintaining a state where the fixing nut and the rotation preventing member are solidly fixed to the fixing bolt as a compression groove of the self-lock nut comes into close contact with a bolt compression portion formed on an upper part of the rotation preventing member to cause the compression groove to press and fit the bolt compression portion by rotation of the self-lock nut in a state where the rotation of the rotation preventing member inserted into a rotation preventing groove of the fixing nut is controlled, and which prevents the self-lock nut from being reversely rotated because a protrusion of the self-lock nut comes into close contact with rotary wings of the rotation preventing member. The fastening structure of a self-lock bolt and nut may be used in various fields where the self-lock bolt and nut are used. Especially, a bolt shaft portion formed on an upper part of the fixing bolt is inserted into two fixed objects in a state where the two fixed objects overlap with each other, such that the fastening structure can be applied even to bridges or railways where there are many external impacts or vibrations; the fixing nut comes into close contact with an upper part of the two fixed objects; and a rotation preventing means consisting of the rotation preventing member and the self-lock nut is fastened to an upper part of the fixing nut, and thus the two fixed objects may be solidly fixed and the rotation preventing member may control the reverse rotation of the self-lock nut.</p> |
