| 摘要 |
The present invention relates to an anti-loosening bolt assembly comprising: a bolt including a bolt head and a bolt shaft which vertically extends from the body head and has a first thread formed on the outer circumferential surface thereof; a fixing nut having a second thread formed on the inner side thereof, which is coupled to the first thread; and a washer arranged between the bolt and an object to be tightened by the bolt, wherein a plurality of coupling protrusions, each of which has an inclined surface formed to be included and a vertical surface connecting adjoining inclined surfaces, are provided on the lower end surface of the bolt head along the circumferential direction; the higher end of the inclined surface is formed to face the loosening direction of the bolt; the lower end of the inclined surface is formed to face the tightening direction of the bolt; a plurality of locking protrusions, each of which has a locking inclined surface formed to be inclined and a vertical surface connecting adjoining locking inclined surfaces, are provided on the upper end surface of the washer along the circumferential direction; the higher end of the locking inclined surface is formed to face the loosening direction of the bolt; the lower end of the locking inclined surface is formed to face the tightening direction of the bolt; and a magnetic member for maintaining the washer and the object to be tightened in a clamped state by magnetic force is provided inside the washer. Accordingly, when rotational force is applied to the bolt in the loosening direction, the inclined surfaces of the bolt are engaged with the locking inclined surfaces of the washer so as to prevent the bolt from being rotated. |
