KEY JOINT Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: joint has a shaft, a bush embracing the shaft, and a key which flat face is mounted on a shaft flat and the main cylindrical part of the side surface - in a through longitudinal radius groove of the bush. The bush side surface is made with an additional cylindrical part which sections are located on both sides of the main and cylindrical parts. The radiuses of curvature of the main and additional cylindrical parts are equal to half the diameter of the groove cross section and half the diameter of the bush hole respectively. The key surface width is larger than the groove diameter. The contact surfaces of the joint members form a nondetachable joint. EFFECT: improved structure. 2 dwg