KEY Russian patent published in 2017 - IPC E05B19/02 

FIELD: construction.

SUBSTANCE: key has a quick-release rod consisting of connected with each other parts, the ends of which are made in the form of connecting elements, each of which has a protrusion and a groove corresponding to the same protrusion and groove of the connecting element coupled with it, and a tool for fixing the joined parts of the rod, made in the form of spring-loaded tube. The diameter of the connected parts of the rod at the place of spring and tube movement is equal to its internal diameter, and the rod with the shank contains a longitudinal groove into which the edge of the tube interacting with the spring is pressed. An advantage of the invention is that the key design is simplified by placing the fixing means outside of the connected elements while maintaining the connection reliability.

EFFECT: form of the elements to be joined is simplified.

2 cl, 3 dwg