BALL HINGE Russian patent published in 2013 - IPC F16C11/06 

FIELD: machine building.

SUBSTANCE: ball hinge includes an all-stamped housing, a ball pin, an insert and a locking member fixing the insert with the pin in the cavity of the housing in the specified position. External surface of the insert is made in the form of a cylinder with d diameter, which is equidistant to internal surface of cylindrical cavity of the housing conjugated with larger diameter of flattened cone, equidistant to internal surface of the housing cavity, on one side, and to smaller diameter of flattened cone, which is not equidistant to internal surface of the housing cavity, on the other side. Some part of cylindrical surface and conical surface of the insert, which is conjugated as to smaller diameter, which form the contour of side elastic elements (11), are provided with radial cuts (10), which are elongated in meridian direction. Internal surface of the insert is made in the form of two conjugated semi-spheres with lubricating grooves (12, 13), which are elongated in meridian direction from cuts (10) to central cavity located on the pole of end part (15) of the insert. The first internal spherical surface on the side of the insert edge corresponds to spherical surface of head of ball pin R of the sphere, and the other spherical internal surface of contour of elements (11), in initial state, till arrangement in the insert of spherical head, is provided with generatrix radius R₁ that is equal to 0.9 to 1.1·R of the sphere. In bottom cone part of the hinge housing cavity there is a cavity; at that, a gap is made between the hollow of hinge housing cavity and part (15) of the insert.

EFFECT: improving operating characteristics owing to improving the structural rigidity, reducing the insert wear and avoiding its destruction, increasing the lubrication efficiency of internal friction surfaces, and avoiding deformation and distortion of the insert at the hinge assembly.

6 cl, 4 dwg