PLASTIC LINING FASTENERS FOR INNER INTERFACE Russian patent published in 2018 - IPC F16B21/08 

FIELD: machine building.

SUBSTANCE: invention relates to fasteners for securing the inner lining and heat insulating mats on structural elements, and is aimed at improving the reliability of joining elements. Monolithic plastic stud contains a housing, extending along a longitudinal axis and having a first portion with a first end, second portion with a second end, and a positioning element separating the first and second portions from each other. First portion includes a plurality of compressible retaining elements extending radially from the longitudinal axis and having a conical shape. Each of the retaining elements tapers in a direction from the positioning member to the stud body, and the first and second retaining elements are disposed closely and separated from one another by a cylindrical portion of the stud having a first diameter, and at least one of the retaining elements has the smallest diameter, approximately equal to the first diameter of the cylindrical portion. Second portion comprises a first and a second resilient tongues, each of which extends at an angle to the longitudinal axis in the direction from the pin body to the positioning element and is formed in such a way, that the free end of the tongue is movable to a longitudinal axis. First and second resilient tongues comprise portions displaced from each other in the axial direction.

EFFECT: radial size of the positioning element exceeds the largest radial dimension of any of the retaining elements.

17 cl, 10 dwg