Anti-loosen fastener

Anti-loosen fastener

  • CN 1,457,401 B
  • Filed: 06/19/2002
  • Issued: 01/18/2012
  • Est. Priority Date: 05/01/2002
  • Status: Active Grant
First Claim
Patent Images

1. a fastener is characterized in that:

  • comprising;

    bolt;

    Packing ring;

    It has the bolt through hole bigger slightly than the nominal diameter of bolt in base part;

    At the upright extreme direction coniform tube sheet of diameter reduction gradually that is provided with before the bolt axis around this bolt through hole;

    The inner peripheral surface of this coniform tube sheet is the smooth structure that does not have worm tooth;

    The part of this coniform tube sheet is processed the heavy section that the round center of relative bolt through hole has small off-centre, and on the thickest position of the wall of avoiding this heavy section, be formed with on said base portion and above-mentioned coniform tube sheet continuous scarce justifying and use slit;

    Nut;

    The top of the internal thread part that it screws in the screw section with above-mentioned bolt offers coniform hole portion;

    Above-mentioned coniform hole portion has the conical surface at the angle of inclination identical with the angle of inclination of the coniform tube sheet of packing ring;

    Above-mentioned conical surface makes the diameter in not relative with the above-mentioned packing ring partly interior week of the opening of part littler than the diameter of above-mentioned coniform tube sheet front end periphery;

    Make the diameter of opening of half part of a relative side with above-mentioned packing ring littler than the outer circumference diameter of above-mentioned coniform tube sheet root, the height of the above-mentioned coniform tube sheet of its aspect ratio is higher slightlyBe provided with in the base part of packing ring that diameter is a little bigger slightly than the diameter of the large-diameter portion of coniform tube sheet, the little recess of thickness of this base part of aspect ratio.

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