FASTENER WITH ONE-SIDED ACCESS Russian patent published in 2018 - IPC F16B19/10 E04F13/24 

FIELD: instrument engineering.

SUBSTANCE: invention relates to fastening means intended for the predominantly hidden attachment of various elements to any systems and structures, in particular for fixing front panels on facade subsystems. Technical result is achieved by the fact that the fastener with one-way access for installation in blind holes comprises a tubular body in the form of a cylindrical sleeve with a weakened part and with a cap on the opposite side, a core passing through the tubular body in the form of a rod with a break-away neck and an expansion head disposed on the side of the weakened portion of the sleeve, and a shank extending from the sleeve on the other side thereof and intended to interact with the core pulling means, the core having a transition portion between the core and the expansion head, the surface of which is essentially the surface of the body of revolution, while the sleeve from the shank side has the main part and the weakened part on the side of the expansion head of the rod, forming a deformable element, wherein the wall thickness is substantially constant in the circumferential direction in any cross-section of said weakened shank portion of the sleeve, and the break-away neck is designed so that when the core is pulled out, the rod is broken away at the point of this neck at the moment of resting of the said transition section onto the main part of the sleeve. Technical result is also achieved by the fact that a thread is formed on the shank rod for engagement with the core pulling means in the form of a nut, while the length of the thread on the shank is substantially equal to the stroke of the expansion head until the transition portion of the core reaches the main part of the sleeve.

EFFECT: technical result is a high quality of fastening in combination with simplicity of design.

34 cl, 5 dwg