FASTENER WITH ONE-SIDED ACCESS Russian patent published in 2020 - IPC F16B19/10 

FIELD: construction.

SUBSTANCE: invention relates to fasteners with one-sided access, intended for installation mainly in non-through holes for attachment of various elements to any systems and structures, and is aimed at improvement of fastening quality combined with simplicity of design, manufacture, use, as well as stability of result and possibility of simple visual control of installation accuracy. Fastener with one-sided access comprises a tubular body in the form of a cylindrical bushing, which is a deformable element, with a head on one side, passing through tubular housing core in form of rod with expanding head, located on side opposite to head, and rod tail, extending from the sleeve on the side of the cap and intended for interaction with the core puller, wherein the rod has a tear-off neck. On the rod between the expanding head and its shank there is a section with diameter, which is larger, relative to and from the side of the shank, which is a section limiting movement of the rod (hereinafter referred to as "SLMR"), and tear-off neck is made so that when core is pulled out its rod breaks along this neck at moment of stop of surface of SLMR from shank side in plane of core puller pressed to cap, diameter of inlet opening of which is equal to or greater than shank diameter and less than diameter of SLMR, and core breakage occurs due to increased pulling force arising from thrust of SLMR surface on shank side in plane of core drawing device.

EFFECT: fastener with one-sided access is proposed.

26 cl, 13 dwg