Contracting is easy and comes loose and the contracting system which is prevented

摘要

The subject innovation relates to a clamping device which prevents easy tightening loosening, there bolt body part 12 of the bolt 1, the bolt body groove 13 a bolt head portion 11 is provided with the double-sided pressure-sensitive adhesive seal (40) is formed the nut 2 is provided with locking groove 23 and the locking step (24) is formed on the washer (3), the nut support 32 and the locking projection 31, the fixing bolt when 33 is formed fastening them washer body groove 13 (3) fixing (33) when the donor and easy access in the corresponding combined state tightened by turning into the nut (2) to the bolt (1) the washer to the locking groove 23 of the nut (2) (3) the locking projection portion 31 is entered and, when the bolt head portion 11, the double-sided pressure-sensitive adhesive seal (40) in part is adhesive bonded into the bolt in the absence separate tools or bolts by hand (1) engaged in or reducing the time and labor, which is not necessary to conclude then secure the nut (2) have fastening bolt engaged with the male screw and the female screw of the nut in the first place and easy access bolts It can be inserted and can improve the working convenience, and secure fastening device, over time preventing loosening the bolts and nuts used in the developing of small vibrations.