KEY CONNECTION Russian patent published in 2009 - IPC F16B3/00 F16D1/08 

FIELD: machine building.

SUBSTANCE: invention relates to machine building field, particularly to key connections. Key connection contains flatted shaft, flatted pin key, enveloping shaft, bush with implemented on its internal surface, from the end, longitudinal cylindrical groove with diametre equal to diametre of bushing key and axis located at a distance L from shaft axis equal to L=0.5D+(0.2÷0.4)d, where: L - distance between groove axis of bush and shaft axle, D - diametre of landing surface of bush and shaft, d - diametre of bushing key. Additionally width of opened part t of groove is less than diametre of bushing key.

EFFECT: reduction of labour-intensiveness of manufacturing and assemblage of bushing key.

5 cl, 2 dwg